A multi-path vehicle front cabin structure and vehicle

Abstract

The present invention provides a multi-path vehicle front cabin structure and a vehicle, and relates to the technical field of automobile accessories, including a combined front defense assembly, which includes a front defense body assembly and a calf beam assembly; a first crossbeam assembly is located above the front defense body assembly and is connected to the front defense body assembly; the front cabin assembly includes a front enclosure assembly, a left wheel house side beam assembly, a right wheel house side beam assembly, a front cabin left longitudinal beam assembly and a front cabin right longitudinal beam assembly; the left wheel house side beam assembly and the right wheel house side beam assembly are connected to both ends of the first crossbeam assembly, and the front cabin right longitudinal beam assembly and the front cabin left longitudinal beam assembly are connected to the front defense body assembly; the subframe assembly is located below the front cabin assembly, including a subframe left longitudinal beam assembly and a subframe right longitudinal beam assembly, and the subframe left longitudinal beam assembly and the subframe right longitudinal beam assembly are connected to the front cabin assembly and the calf beam assembly; the present invention has more force transmission paths from top to bottom, has a larger force-bearing area, and the collision force is more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, and in particular to a multi-path vehicle front cabin structure and a vehicle. Background Art

[0002] At present, the safety performance of new energy vehicles has become a key issue in today's society, especially in passive safety, where frontal collision and offset collision are the most frequent accidents. Therefore, the safety and reliability of the front cabin structure are particularly important.

[0003] Since most new energy vehicles adopt rear-wheel drive and do not have engines, gearboxes and other components, in order to reduce costs, car companies usually shorten the front of the car as a whole, which leads to a shortened overall energy absorption area of ​​the front cabin and reduced energy absorption effect. Therefore, it is particularly important to use a multi-path and reasonable front cabin structure to ensure that the front cabin can fully deform and absorb energy during a collision.

[0004] Most of the existing multi-path front cabin structures are solved by increasing the number of anti-collision beams and energy absorption boxes. This solution will bring the disadvantage of increased parts and components, and although the collision paths seem to increase, the energy absorption is actually mainly dependent on the longitudinal beams of the vehicle body. The energy absorption effect is not significantly enhanced, and the vehicle safety factor is low. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-path vehicle front cabin structure and a vehicle to solve the problems existing in the above-mentioned prior art. It has more force transmission paths from top to bottom, and when a collision occurs, the front defense body assembly and the calf beam assembly are subjected to force at the same time, having a larger force-bearing area, more uniform collision force, excellent energy absorption effect, and can improve the vehicle safety factor.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A multi-path vehicle front cabin structure, comprising:

[0008] A combined front guard assembly, the combined front guard assembly comprising a front guard body assembly and a calf beam assembly connected to the front guard body assembly, the calf beam assembly being located below the front guard body assembly;

[0009] A first crossbeam assembly, the first crossbeam assembly is located above the front fender body assembly and connected to the front fender body assembly;

[0010] A front cabin assembly, the front cabin assembly comprising a front enclosure assembly, a left wheel house side beam assembly and a right wheel house side beam assembly respectively connected to the upper sides of both ends of the front enclosure assembly, and a front cabin left longitudinal beam assembly and a front cabin right longitudinal beam assembly respectively connected to the lower sides of both ends of the front enclosure assembly; the ends of the left wheel house side beam assembly and the ends of the right wheel house side beam assembly are respectively connected to the two ends of the first cross beam assembly, and the ends of the right longitudinal beam assembly and the ends of the left longitudinal beam assembly of the front cabin are both connected to the front defense body assembly;

[0011] A subframe assembly, the subframe assembly is located below the front cabin assembly, and includes a subframe left longitudinal beam assembly and a subframe right longitudinal beam assembly connected by a connecting crossbeam, and both ends of the subframe left longitudinal beam assembly and the subframe right longitudinal beam assembly are respectively connected to the front cabin assembly and the calf beam assembly.

[0012] Preferably, the front defense body assembly is connected to the left longitudinal beam assembly of the front cabin and the right longitudinal beam assembly of the front cabin through the left energy absorption box of the front defense and the right energy absorption box of the front defense respectively; the calf beam assembly is connected to the left longitudinal beam assembly of the subframe and the right longitudinal beam assembly of the subframe through the left energy absorption box of the calf beam and the right energy absorption box of the calf beam respectively.

[0013] Preferably, the front defense body assembly includes a front defense straight section and two front defense bending sections connected to the two ends of the front defense straight section, and the front defense left energy absorption box and the front defense right energy absorption box are respectively arranged at the bending parts of the two front defense bending sections; the calf beam assembly includes a calf beam straight section and two calf beam bending sections connected to the two ends of the calf beam straight section, and the calf beam left energy absorption box and the calf beam right energy absorption box are respectively located at the bending parts of the two calf beam bending sections.

[0014] Preferably, the front defense body assembly and the calf beam assembly are connected by a front defense connecting plate, and the front defense connecting plate is located on the inner sides of the front defense body assembly and the calf beam assembly, and along the extension direction of the calf beam assembly, the front defense connecting plate is located on the outer sides of the front left energy absorption box and the front right energy absorption box.

[0015] Preferably, the first crossbeam assembly comprises an upper crossbeam split body and a lower crossbeam split body which are welded together.

[0016] Preferably, it also includes a vertically arranged first cross beam connecting plate, which is curved with the middle portion concave inward, the inner side of the top end of the first cross beam connecting plate is connected to the middle portion of the first cross beam assembly, and the outer side of the bottom end of the first cross beam connecting plate is connected to the middle portion of the front defense body assembly.

[0017] Preferably, a left shock absorber tower assembly and a right shock absorber tower assembly are respectively provided at the connection positions of the front enclosure assembly and the left wheel house side beam assembly and the right wheel house side beam assembly, and the left shock absorber tower assembly and the right shock absorber tower assembly are connected via a second cross beam assembly.

[0018] Preferably, the front cabin assembly also includes a first cross-beam left column assembly and a first cross-beam right column assembly, the bottom end of the first cross-beam left column assembly is connected to the front end of the left longitudinal beam assembly of the front cabin, and the top end of the first cross-beam left column assembly is connected to the left end of the first cross-beam assembly; the bottom end of the first cross-beam right column assembly is connected to the front end of the right longitudinal beam assembly of the front cabin, and the top end of the first cross-beam right column assembly is connected to the right end of the first cross-beam assembly.

[0019] Preferably, a water trough assembly is provided on the top of the front enclosure assembly, and a front enclosure reinforcing cross beam is provided on the bottom of the front enclosure assembly; a left connecting column of a subframe body for connecting the left longitudinal beam assembly of the front cabin is provided on the subframe left longitudinal beam assembly, and a right connecting column of a subframe body for connecting the right longitudinal beam assembly of the front cabin is provided on the subframe right longitudinal beam assembly.

[0020] The present invention also provides a vehicle, comprising the above-mentioned multi-path vehicle front cabin structure.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] The multi-path vehicle front cabin structure in the present invention has more force transmission paths from top to bottom, and during a collision, the front defense body assembly and the calf beam assembly are subjected to force at the same time, having a larger force-bearing area, more uniform collision force, and excellent energy absorption effect, thereby improving the vehicle safety factor.

[0023] In other technical solutions of the present invention, at least five vertically arranged columns or plates, including the first crossbeam left column assembly, the second crossbeam right column assembly, at least two front defense connecting plates and the first crossbeam connecting plate, can connect the three force transmission paths in the front cabin structure of the multi-path vehicle into one, which is conducive to the mutual force transmission between adjacent paths, so that the front cabin structure of the multi-path vehicle forms a whole, the force transmission is more uniform, and the energy absorption effect is further improved. 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 drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1It is a schematic diagram of the overall structure of the front cabin structure of the multi-path vehicle in the present invention;

[0026] Figure 2 It is a schematic diagram of the exploded structure of the front cabin structure of the multi-path vehicle;

[0027] Figure 3 It is a structural schematic diagram of the combined front defense assembly;

[0028] Figure 4 The figure is a schematic diagram of the exploded structure of the front fender assembly;

[0029] Figure 5 It is a structural schematic diagram of the front cabin assembly;

[0030] Figure 6 It is a front view of the front cabin assembly;

[0031] Figure 7 is a structural schematic diagram of a subframe assembly;

[0032] Figure 8 It is a schematic diagram of collision force transmission;

[0033] Fig. 9 It is a side view of the front cabin structure of the multi-path vehicle;

[0034] Fig.10 Fig. 9 The middle is the cross-sectional view of AA;

[0035] Fig.11 for Fig. 9 Cross-sectional view of the middle BB;

[0036] Description of reference numerals:

[0037] 1. Combined front defense assembly; 11. Front defense body assembly; 12. Calf beam assembly; 13. Front defense left mounting plate; 14. Front defense right mounting plate; 15. Front defense left energy absorption box; 16. Front defense right energy absorption box; 17. Calf beam right energy absorption box; 18. Calf beam left energy absorption box; 19. Front defense connecting plate;

[0038] 2. The first crossbeam connecting plate;

[0039] 3. First crossbeam assembly; 31. Upper crossbeam split; 32. Lower crossbeam split; 33. Second bolt; 34. Through hole;

[0040] 4. Second crossbeam assembly;

[0041] 5. Subframe assembly; 51. Right mounting plate of calf beam; 52. Left mounting plate of calf beam; 53. Right connecting column of subframe body; 54. Left connecting column of subframe body; 55. Right longitudinal beam assembly of subframe; 56. Left longitudinal beam assembly of subframe; 57. First connecting cross beam; 58. Second connecting cross beam; 59. Third connecting cross beam; 510. First bolt;

[0042] 6. Front cabin assembly; 61. Right wheelhouse side beam assembly; 62. First crossbeam right column assembly; 63. Right shock tower assembly; 64. Front cabin right longitudinal beam assembly; 65. Front enclosure reinforcement beam; 66. Front cabin left longitudinal beam assembly; 67. First crossbeam left column assembly; 68. Left wheelhouse side beam assembly; 69. Left shock tower assembly; 610. Front enclosure assembly; 611. Water trough assembly; 612. Right longitudinal beam right rear connecting plate; 613. Left longitudinal beam left rear connecting plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0044] The purpose of the present invention is to provide a multi-path vehicle front cabin structure and a vehicle to solve the problems existing in the above-mentioned prior art. It has more force transmission paths from top to bottom, and when a collision occurs, the front defense body assembly and the calf beam assembly are subjected to force at the same time, having a larger force-bearing area, more uniform collision force, excellent energy absorption effect, and can improve the vehicle safety factor.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Embodiment 1:

[0047] like Figure 1 to Figure 11 As shown, this embodiment provides a multi-path vehicle front cabin structure, including:

[0048] The combined front defense assembly 1 includes a front defense body assembly 11 and a calf beam assembly 12 connected to the front defense body assembly 11. The front defense body assembly 11 is a beam structure. The calf beam assembly 12 is located below the front defense body assembly 11 and is basically located in the same vertical plane as the front defense body assembly 11. During a collision, the front defense body assembly 11 and the calf beam assembly 12 are subjected to force at the same time.

[0049] The first crossbeam assembly 3 is located above the front defense body assembly 11 and connected to the front defense body assembly 11; the first crossbeam assembly 3 is slightly backward relative to the front defense body assembly 11 and is in a U-shape as a whole.

[0050] The front cabin assembly 6 includes a front enclosure assembly 610, a left wheel house side beam assembly 68 and a right wheel house side beam assembly 61 respectively connected to the upper sides of both ends of the front enclosure assembly 610, and a front cabin left longitudinal beam assembly 66 and a front cabin right longitudinal beam assembly 64 respectively connected to the lower sides of both ends of the front enclosure assembly 610. The front enclosure assembly 610 separates the vehicle compartment from the front space. The ends of the left wheel house side beam assembly 68 and the right wheel house side beam assembly 61 are respectively connected to the two ends of the first cross beam assembly 3, and the ends of the front cabin right longitudinal beam assembly 64 and the ends of the front cabin left longitudinal beam assembly 66 are both connected to the front defense body assembly 11. Specifically, the ends of the left wheel house side beam assembly 68, the right wheel house side beam assembly 61 and the first cross beam assembly 3 are plugged into each other, and after plugging in, they are connected using a second bolt 33, as shown in FIG. Figure 10~Figure 11 As shown. The left wheel housing side beam assembly 68, the right wheel housing side beam assembly 61 and the first cross beam assembly 3 are all hollow beam structures. After the left wheel housing side beam assembly 68 or the right wheel housing side beam assembly 61 is plugged into the first cross beam assembly 3, a second bolt 33 is usually screwed into the inner cavity of the plugging position, as shown in FIG. Fig.10 As shown, in order to facilitate the installation of the second bolt 33 by a bolt gun, a through hole 34 is opened at the end of the first crossbeam assembly 3 above the installation position of the second bolt 33.

[0051] The subframe assembly 5 is located below the front cabin assembly 6, and includes a subframe left longitudinal beam assembly 56 and a subframe right longitudinal beam assembly 55 connected by a connecting crossbeam. Both ends of the subframe left longitudinal beam assembly 56 and the subframe right longitudinal beam assembly 55 are respectively connected to the front cabin assembly 6 and the calf beam assembly 12. The subframe assembly 5 is a part of the vehicle chassis, usually located at the front end of the vehicle chassis. When the rear end of the subframe assembly 5 is connected to the front cabin assembly 6, it is connected to the bottom of the front enclosure assembly 610 in the front cabin assembly 6 through the bolts vertically arranged on the rear end of the subframe assembly 5, and the rear end surface of the subframe assembly 5 is connected to other parts of the chassis.

[0052] The left, right, front, and rear mentioned in this embodiment are all from the perspective of the vehicle.

[0053] When the multi-path vehicle front cabin structure in this embodiment is subjected to a head-on collision or an offset collision, the front defense body assembly 11 and the calf beam assembly 12 are subjected to force at the same time. The front defense body assembly 11 transfers the force to the front enclosure assembly 610 through the front cabin left longitudinal beam assembly 66 / front cabin right longitudinal beam assembly 64, and finally to the vehicle door sill and A-pillar; the calf beam assembly 12 transfers the force to the vehicle door sill through the subframe assembly 5; at the same time, the front defense body assembly 11 transfers part of the force to the first cross beam assembly 3, and transfers it to the vehicle A-pillar through the left wheel house side beam assembly 68 / right wheel house side beam assembly 61. Therefore, in this embodiment, from top to bottom, the first cross beam assembly 3-left wheel house side beam assembly 68 / right wheel house side beam assembly 61-vehicle A-pillar is the first path of force transmission; the front defense body assembly 11-front cabin left longitudinal beam assembly 66 / front cabin right longitudinal beam assembly 64-front enclosure assembly 610-vehicle threshold and A-pillar is the second path of force transmission; the calf beam assembly 12-subframe assembly 5-vehicle threshold is the third path of force transmission. Therefore, the multi-path vehicle front cabin structure in this embodiment has more force transmission paths from top to bottom, and in the event of a collision, the front defense body assembly 11 and the calf beam assembly 12 are subjected to force at the same time, having a larger force bearing area, more uniform collision force, excellent energy absorption effect, and can improve the vehicle safety factor.

[0054] like Figure 3 As shown, in this embodiment, the front defense body assembly 11 is connected to the front cabin left longitudinal beam assembly 66 and the front cabin right longitudinal beam assembly 64 through the front defense left energy absorption box 15 and the front defense right energy absorption box 16 respectively; the calf beam assembly 12 is connected to the sub-frame left longitudinal beam assembly 56 and the sub-frame right longitudinal beam assembly 55 through the calf beam left energy absorption box 18 and the calf beam right energy absorption box 17 respectively. The front defense left energy absorption box 15, the front defense right energy absorption box 16, the calf beam left energy absorption box 18, and the calf beam right energy absorption box 17 are all split structures, each of which is welded by the corresponding upper and lower splits through double welding and spot welding. By setting the front defense left energy absorption box 15, the front defense right energy absorption box 16, the calf beam left energy absorption box 18, and the calf beam right energy absorption box 17, the collision energy absorption capacity of the front cabin structure of the multi-path vehicle can be improved. The end of the front left energy absorption box 15 and the end of the calf beam left energy absorption box 18 are connected through the front left mounting plate 13, and the front left mounting plate 13 is connected to the end of the front cabin left longitudinal beam assembly 66 and the calf beam left mounting plate 52 on the sub-frame left longitudinal beam assembly 56 by bolts; the end of the front right energy absorption box 16 and the end of the calf beam right energy absorption box 17 are connected through the front right mounting plate 14, and the front right mounting plate 14 is connected to the end of the front cabin right longitudinal beam assembly 64 and the calf beam right mounting plate 51 on the sub-frame right longitudinal beam assembly 55 by bolts.

[0055] Furthermore, in this embodiment, the front defense body assembly 11 includes a front defense straight section and two front defense bending sections connected to the two ends of the front defense straight section, and the front defense left energy absorption box 15 and the front defense right energy absorption box 16 are respectively arranged at the bending parts of the two front defense bending sections; the calf beam assembly 12 includes a calf beam straight section and two calf beam bending sections connected to the two ends of the calf beam straight section, and the calf beam left energy absorption box 18 and the calf beam right energy absorption box 17 are respectively located at the bending parts of the two calf beam bending sections. The two front defense bending sections and the two calf beam bending sections can protect the corners of the front end of the vehicle and absorb energy, thereby improving the protection capability of the vehicle.

[0056] In the present embodiment, the front defense body assembly 11 and the calf beam assembly 12 are connected by a front defense connecting plate 19, which is located on the inner side of the front defense body assembly 11 and the calf beam assembly 12. Along the extension direction of the calf beam assembly 12, the front defense connecting plate 19 is located on the outer side of the front defense left energy absorption box 15 and the front defense right energy absorption box 16, further improving the anti-collision capability of the edge positions of the front defense body assembly 11 and the calf beam assembly 12.

[0057] like Figure 4 As shown, in this embodiment, the first crossbeam assembly 3 includes an upper crossbeam split 31 and a lower crossbeam split 32; the upper crossbeam split 31 and the lower crossbeam split 32 are connected by welding.

[0058] The present embodiment further includes a first crossbeam connecting plate 2 arranged vertically, the first crossbeam connecting plate 2 is curved with the middle portion concave inwards, the inner side of the top end of the first crossbeam connecting plate 2 is connected to the middle portion of the first crossbeam assembly 3, and the outer side of the bottom end of the first crossbeam connecting plate 2 is connected to the middle portion of the front defense body assembly 11. The curved shape of the first crossbeam connecting plate 2 concave inwards can improve its anti-deformation ability when subjected to impact, and is also conducive to transmitting the collision force from the front defense body assembly 11 to the first crossbeam assembly 3.

[0059] like Figure 5 , Figure 6 As shown, in this embodiment, the left shock tower assembly 69 and the right shock tower assembly 63 are respectively arranged at the connection positions of the front enclosure assembly 610 and the left wheel house side beam assembly 68 and the right wheel house side beam assembly 61, and the left shock tower assembly 69 and the right shock tower assembly 63 are connected by the second cross beam assembly 4. At the same time, a front enclosure reinforcement cross beam 65 is also arranged at the bottom of the front enclosure assembly 610. By arranging the second cross beam assembly 4 and the front enclosure reinforcement cross beam 65, the crushing deformation caused by the lateral force (the force along the axial direction of the second cross beam assembly 4) when the vehicle body is subjected to a lateral collision can be more effectively guaranteed, thereby improving the lateral impact resistance of the front cabin structure.

[0060] Furthermore, in this embodiment, the front cabin assembly 6 also includes a first crossbeam left column assembly 67 and a first crossbeam right column assembly 62. The bottom end of the first crossbeam left column assembly 67 is connected to the front end of the front cabin left longitudinal beam assembly 66, and the top end of the first crossbeam left column assembly 67 is connected to the left end of the first crossbeam assembly 3, and is close to the connection position between the end of the first crossbeam assembly 3 and the left wheelhouse side beam assembly 68, playing a supporting role. The bottom end of the first crossbeam right column assembly 62 is connected to the front end of the front cabin right longitudinal beam assembly 64, and the top end of the first crossbeam right column assembly 62 is connected to the right end of the first crossbeam assembly 3, and is close to the connection position between the end of the first crossbeam assembly 3 and the right wheelhouse side beam assembly 61. Thus, at least five vertically arranged columns or plates, including the first crossbeam left column assembly 67, the second crossbeam right column assembly, at least two front defense connecting plates 19 and the first crossbeam connecting plate 2, can connect the three force transmission paths in the front cabin structure of the multi-path vehicle into one, which is conducive to the mutual force transmission between adjacent paths, thereby forming the multi-path vehicle front cabin structure into a whole, making the force transmission more uniform and the energy absorption effect further improved.

[0061] Furthermore, in this embodiment, a water trough assembly 611 is provided on the top of the front enclosure assembly 610, and a left longitudinal beam left rear connecting plate 613 and a right longitudinal beam right rear connecting plate 612 are respectively provided on both sides of the bottom of the front enclosure assembly 610; wherein, the left longitudinal beam left rear connecting plate 613 is used to connect the left longitudinal beam and the left door sill on the vehicle chassis, and the right longitudinal beam right rear connecting plate 612 is used to connect the right longitudinal beam and the right door sill on the vehicle chassis.

[0062] like Figure 7 As shown, the sub-frame assembly 5 is provided with a first connecting crossbeam 57, a second connecting crossbeam 58 and a third connecting crossbeam 59 for connecting the sub-frame left longitudinal beam assembly 56 and the sub-frame right longitudinal beam assembly 55. The sub-frame left longitudinal beam assembly 56 is provided with a sub-frame body left connecting column 54 for connecting the front cabin left longitudinal beam assembly 66, and the sub-frame right longitudinal beam assembly 55 is provided with a sub-frame body right connecting column 53 for connecting the front cabin right longitudinal beam assembly 64, which can transmit the force of the sub-frame assembly 5 to the front cabin left longitudinal beam assembly 66 and the front cabin right longitudinal beam assembly 64, further improving the force uniformity. Specifically, the sub-frame assembly 5 is connected to the front cabin assembly 6 by a first bolt 510.

[0063] Embodiment 2:

[0064] This embodiment provides a vehicle, including the multi-path vehicle front cabin structure described in Embodiment 1.

[0065] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0066] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-path vehicle front cabin structure, characterized in that: include: A combined front guard assembly, the combined front guard assembly comprising a front guard body assembly and a calf beam assembly connected to the front guard body assembly, the calf beam assembly being located below the front guard body assembly; A first crossbeam assembly, the first crossbeam assembly is located above the front fender body assembly and connected to the front fender body assembly; A front cabin assembly, the front cabin assembly comprising a front enclosure assembly, a left wheel house side beam assembly and a right wheel house side beam assembly respectively connected to the upper sides of both ends of the front enclosure assembly, and a front cabin left longitudinal beam assembly and a front cabin right longitudinal beam assembly respectively connected to the lower sides of both ends of the front enclosure assembly; the ends of the left wheel house side beam assembly and the ends of the right wheel house side beam assembly are respectively connected to the two ends of the first cross beam assembly, and the ends of the right longitudinal beam assembly and the ends of the left longitudinal beam assembly of the front cabin are both connected to the front defense body assembly; A subframe assembly, the subframe assembly is located below the front cabin assembly, and includes a subframe left longitudinal beam assembly and a subframe right longitudinal beam assembly connected by a connecting crossbeam, and both ends of the subframe left longitudinal beam assembly and the subframe right longitudinal beam assembly are respectively connected to the front cabin assembly and the calf beam assembly; It also includes a vertically arranged first crossbeam connecting plate, which is curved with the middle portion concave inward, the inner side of the top end of the first crossbeam connecting plate is connected to the middle portion of the first crossbeam assembly, and the outer side of the bottom end of the first crossbeam connecting plate is connected to the middle portion of the front defense body assembly.

2. The multi-path vehicle front cabin structure according to claim 1, characterized in that: The front defense body assembly is connected to the left longitudinal beam assembly of the front cabin and the right longitudinal beam assembly of the front cabin respectively through the left energy absorption box of the front defense and the right energy absorption box of the front defense; the calf beam assembly is connected to the left longitudinal beam assembly of the subframe and the right longitudinal beam assembly of the subframe respectively through the left energy absorption box of the calf beam and the right energy absorption box of the calf beam.

3. The multi-path vehicle front cabin structure according to claim 2, characterized in that: The front defense body assembly includes a front defense straight section and two front defense bending sections connected to the two ends of the front defense straight section, and the front defense left energy absorption box and the front defense right energy absorption box are respectively arranged at the bending parts of the two front defense bending sections; the calf beam assembly includes a calf beam straight section and two calf beam bending sections connected to the two ends of the calf beam straight section, and the calf beam left energy absorption box and the calf beam right energy absorption box are respectively located at the bending parts of the two calf beam bending sections.

4. The multi-path vehicle front cabin structure according to claim 3, characterized in that: The front defense body assembly and the calf beam assembly are connected via a front defense connecting plate, and the front defense connecting plate is located on the inner sides of the front defense body assembly and the calf beam assembly. Along the extension direction of the calf beam assembly, the front defense connecting plate is located on the outer sides of the front left energy absorption box and the front right energy absorption box.

5. The multi-path vehicle front cabin structure according to claim 1, characterized in that: The first crossbeam assembly includes an upper crossbeam split and a lower crossbeam split that are welded together.

6. The multi-path vehicle front cabin structure according to claim 1, characterized in that: A left shock absorber tower assembly and a right shock absorber tower assembly are respectively arranged at the connection positions of the front enclosure assembly and the left wheel house side beam assembly and the right wheel house side beam assembly. The left shock absorber tower assembly and the right shock absorber tower assembly are connected via a second cross beam assembly.

7. The multi-path vehicle front cabin structure according to claim 1, characterized in that: The front cabin assembly also includes a first cross-beam left column assembly and a first cross-beam right column assembly, the bottom end of the first cross-beam left column assembly is connected to the front end of the left longitudinal beam assembly of the front cabin, and the top end of the first cross-beam left column assembly is connected to the left end of the first cross-beam assembly; the bottom end of the first cross-beam right column assembly is connected to the front end of the right longitudinal beam assembly of the front cabin, and the top end of the first cross-beam right column assembly is connected to the right end of the first cross-beam assembly.

8. The multi-path vehicle front cabin structure according to claim 1, characterized in that: A water trough assembly is arranged on the top of the front enclosure assembly, and a front enclosure reinforcing cross beam is arranged on the bottom of the front enclosure assembly; a left connecting column of a subframe body for connecting the left longitudinal beam assembly of the front cabin is arranged on the left longitudinal beam assembly of the subframe, and a right connecting column of a subframe body for connecting the right longitudinal beam assembly of the front cabin is arranged on the right longitudinal beam assembly of the subframe.

9. A vehicle, characterized in that: It comprises a multi-path vehicle front cabin structure as described in any one of claims 1 to 8.

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