CN219406615U - Vehicle body front part force transmission structure and vehicle - Google Patents

Abstract

The utility model provides a vehicle body front part force transmission structure and a vehicle, wherein the vehicle body front part force transmission structure comprises cabin longitudinal beams and threshold beams which are arranged on the left side and the right side of a vehicle body, and seat cross beams connected between the threshold beams on the two sides; the cabin longitudinal beam penetrates through the front wall and extends to be connected with the seat cross beam. According to the vehicle body front part force transmission structure, the cabin longitudinal beams penetrate through the front wall and extend to be connected with the seat cross beams, so that the integrity of the force transmission structure is improved, when a vehicle is in front collision, collision force can be transmitted to the front wall, the threshold beams and the seat cross beams while being transmitted backwards through the cabin longitudinal beams, so that the collision force is continuously and dispersedly transmitted in the front-rear direction and the left-right direction of the whole vehicle, the force transmission effect of the front part of the vehicle body is improved, the invasion amount of the front wall is reduced, and the safety of the front part of the vehicle body is improved.

Description

Vehicle body front part force transmission structure and vehicle

Technical Field

The utility model relates to the technical field of vehicle parts, in particular to a vehicle body front part force transmission structure; meanwhile, the utility model also relates to a vehicle with the vehicle body front part force transmission structure.

Background

At present, a force transmission structure is generally arranged on a vehicle body for improving the safety of the vehicle. The cabin longitudinal beam is used as an important component in a force transmission structure, the front end of the cabin longitudinal beam is connected to the front periphery of the vehicle body, the rear section of the cabin longitudinal beam transmits collision force to the threshold beam and the left and right upper longitudinal beams respectively through a torsion box structure at the root of the longitudinal beam, and the stress facing the cabin longitudinal beam is transmitted to the seat cross beam through the left and right longitudinal beams.

However, when the vehicle is crashed, the conventional force transmission structure is limited to a certain extent by the force transmission of the cabin longitudinal beam, so that the energy absorption of the cabin longitudinal beam to the crash force is insufficient, and the problem that the intrusion quantity of the front wall exceeds the standard is easily caused, thereby influencing the safety of passengers. Although the torque box structure is favorable for improving the force transmission effect, the occupied amount of the front end space at the bottom of the automobile body is large, so that the arrangement of batteries is not favorable.

Disclosure of Invention

In view of the above, the present utility model aims to provide a vehicle body front portion force transmission structure that improves the force transmission effect of the vehicle body front portion, reduces the intrusion amount of the front wall, and improves the safety of the vehicle body front portion.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a force transmission structure of the front part of a vehicle body comprises cabin longitudinal beams and threshold beams which are arranged on the left side and the right side of the vehicle body, and seat cross beams which are connected between the threshold beams on the two sides; the cabin longitudinal beam penetrates through the front periphery and extends to be connected with the seat cross beam.

Further, a first force transmission part is arranged between the cabin longitudinal beam and the threshold beam, the first force transmission part is positioned at the connection part of the cabin longitudinal beam and the front wall, and the first force transmission part is connected with the front wall.

Further, the first force transfer portion includes a first force transfer plate having a lateral portion extending in the front-rear direction of the whole vehicle and a longitudinal portion extending in the up-down direction of the whole vehicle; the transverse part is attached to the bottom of the front wall and is connected with the threshold beam, and the longitudinal part is connected with the threshold beam and the A column.

Further, a second force transmission part is arranged between the cabin longitudinal beam and the A column, the second force transmission part is positioned at the connection part of the cabin longitudinal beam and the front wall, and the second force transmission part is connected with the front wall.

Further, a front wall cross beam is connected between the cabin longitudinal beams at two sides, and the front wall cross beam is located at the front side of the front wall and connected with the front wall.

Further, along the front-rear direction of the whole car, both ends of the front cross beam are respectively provided with a protruding portion protruding forward, and along the direction of the cabin longitudinal beam pointing to the same end, the protruding length of the protruding portion is gradually increased.

Further, the front wall is provided with a through hole for the cabin longitudinal beam to pass through, and a flanging arranged along the edge of the through hole, and the front wall is connected with the cabin longitudinal beam through the flanging.

Further, the seat cross beam comprises a front cross beam and a rear cross beam which are arranged at intervals along the front-rear direction of the whole vehicle; the front cross beam is provided with a notch for the cabin longitudinal beam to pass through, and the cabin longitudinal beam is connected with the front end of the rear cross beam.

Further, the cabin longitudinal beam has an energy absorbing portion located on the front side of the front wall and a rear portion located on the rear side of the front wall in the front-rear direction of the whole vehicle;

the rear end of the energy absorbing part is provided with a convex part protruding downwards, and the convex length of the convex part is gradually increased along the direction pointing to the front wall.

Compared with the prior art, the utility model has the following advantages:

according to the vehicle body front part force transmission structure, the cabin longitudinal beams penetrate through the front wall and extend to be connected with the seat cross beams, so that the integrity of the force transmission structure is improved, when a vehicle is in front collision, collision force can be transmitted to the front wall, the threshold beams and the seat cross beams while being transmitted backwards through the cabin longitudinal beams, so that the collision force is continuously and dispersedly transmitted in the front-rear direction and the left-right direction of the whole vehicle, the force transmission effect of the front part of the vehicle body is improved, the invasion amount of the front wall is reduced, and the safety of the front part of the vehicle body is improved.

In addition, the first force transmission part is favorable for the collision force to be transmitted to the threshold beam and the front wall by the cabin longitudinal beam, and further improves the dispersion transmission effect of the collision force. The transverse part and the longitudinal part in the first force transfer plate are simple in structure, collision force is transmitted to the threshold beam and the A column of the front wall, and the strength of the force transfer structure can be improved, so that the invasion amount of the front wall in front collision is reduced. Through setting up second biography power portion, do benefit to the collision force direct transfer to the A post on the cabin longeron, further improve biography power dispersion effect to the invasion volume of enclose when the frontal collision is reduced. The setting of enclose the crossbeam before does benefit to the structural strength and the power transmission effect that enclose before improving. The protruding parts at the two ends of the front wall cross beam are beneficial to guiding the transmission dispersion effect of collision force at the protruding parts, and the protruding parts are simple in structure and easy to arrange and implement.

In addition, the through hole is favorable for the longitudinal beam of the engine room to pass through, the flanging is favorable for the connection of the longitudinal beam of the engine room and the front wall, and meanwhile, the sealing effect is better, and the requirements of the sealing performance of the engine room are favorably met. The arrangement of the front cross beam and the rear cross beam is beneficial to improving the using effect of the seat cross beam, the cabin increment penetrates through the front cross beam and is connected with the front end of the rear cross beam, the structural strength of the force transmission structure is further improved, and the bearing capacity of the force transmission structure is further improved. The arrangement of the energy absorption part and the rear part in the engine room longitudinal beam is beneficial to ensuring the collapse trend of the engine room longitudinal beam during the frontal collision and simultaneously is beneficial to strengthening the bearing capacity of the engine room longitudinal beam.

Another object of the present utility model is to provide a vehicle provided with the vehicle body front force transmitting structure as described above.

According to the vehicle, the force transmission structure of the front part of the vehicle body is arranged, so that the force transmission effect of the front part of the vehicle body in a frontal collision is improved, and the safety of the vehicle is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic view of a force transmission structure of a front part of a vehicle body according to an embodiment of the present utility model;

fig. 2 is a schematic view of a force transmission structure of a front part of a vehicle body according to an embodiment of the present utility model in another view;

FIG. 3 is a schematic view of a portion of a force transmission path of a front body force transmission structure according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a nacelle stringer according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a portion of a front wall according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a first force transfer plate and a second force transfer plate according to an embodiment of the present utility model at a view angle thereof;

fig. 7 is a schematic structural view of a first force transfer plate and a second force transfer plate according to an embodiment of the present utility model at a view angle;

reference numerals illustrate:

1. a front floor; 101. a middle channel; 2. cabin stringers; 201. an energy absorbing portion; 202. a rear portion; 203. a convex portion; 3. a front wall; 301. a through hole; 302. flanging; 4. a front rail; 401. a protruding portion; 5. a seat cross member; 501. a front cross member; 502. a rear cross member; 6. a threshold beam; 7. a first force transfer plate; 701. a longitudinal portion; 702. a lateral portion; 703. reinforcing ribs; 8. a second force transfer plate; 9. a column A; 10. reinforcing plate.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. In addition, the terms "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, the terms "upper, lower, left, right, front, and rear" used in the present embodiment are defined with reference to the up-down direction, the left-right direction, and the front-rear direction of the automobile. The vertical direction of the vehicle, i.e., the height direction of the vehicle (Z direction), the front-rear direction of the vehicle, i.e., the longitudinal direction of the vehicle (X direction), and the lateral direction of the vehicle, i.e., the width direction of the vehicle (Y direction).

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The present embodiment relates to a vehicle body front portion force transmitting structure including cabin stringers 2 and rocker beams 6 provided on both left and right sides of a vehicle body, and a seat cross member 5 connected between the rocker beams 6 on both sides. Wherein the cabin stringers 2 are arranged through the front wall 3 and extend to connect with the seat cross-beams 5.

Based on the above general description, an exemplary structure of the vehicle body front force transmitting structure in the present embodiment is shown in fig. 1 to 3. The front floor 1 is an installation foundation provided by a force transmission structure at the front part of a vehicle body, a middle channel 101 extending along the length direction of the whole vehicle is arranged in the middle of the width direction of the front floor 1, the front end of the middle channel 101 is connected with the front wall 3, and the rear end of the middle channel extends to the rear side of the front floor 1. The two nacelle stringers 2 are provided on both sides in the width direction of the center tunnel 101, and are provided at intervals from the center tunnel 101. The seat cross beam 5 spans the top of the middle channel 101 and is connected with the middle channel 101, so that the cabin longitudinal beam 2, the threshold beam 6, the seat cross beam 5 and the middle channel 101 are arranged in a crisscross manner, and the structure strength and the force transmission dispersion effect are good. It will be appreciated that a solution in which no central channel 101 is provided is also possible in this embodiment.

The structure of the nacelle longitudinal beam 2 will be described first. As shown in fig. 1, 3 and 4, the cabin longitudinal beam 2 in the present embodiment has a cavity adapted to its own shape, and both front and rear ends of the cavity are provided through both ends of the cabin longitudinal beam 2. The cavities in the cabin stringers 2 here facilitate an improved energy absorption effect for the impact forces. As a preferred embodiment, the cabin rail 2 has an energy absorbing portion 201 located on the front side of the front wall 3 and a rear portion 202 located on the rear side of the front wall 3 in the front-rear direction of the whole vehicle, wherein the front wall 3 dividing the energy absorbing portion 201 and the rear portion 202 is shown by a broken line in the figure.

As shown in fig. 4, the thickness of the energy absorbing portion 201 is greater than the thickness of the rear portion 202, and the thickness of the rear portion 202 is small to occupy less space in the cabin. The rear end of the energy absorbing portion 201 has a convex portion 203 that protrudes downward, and the protruding length of the convex portion 203 is set to be larger in the direction toward the front wall 3, that is, in the direction indicated by the arrow in fig. 4 (the direction toward the front wall 3 from front to rear in the overall vehicle length direction). The arrangement is beneficial to guiding the transmission dispersion effect of collision force at the joint of the cabin longitudinal beam 2 and the front wall 3 while meeting the arrangement, and the protruding part 401 has a simple structure and is easy to arrange and implement.

In order to facilitate the connection between the cabin rail 2 and the front wall 3, as a preferred embodiment, the front wall 3 has a through-hole 301 through which the cabin rail 2 passes, and a flange 302 provided along the edge of the through-hole 301, the front wall 3 being connected to the cabin rail 2 by the flange 302. As shown in fig. 5, the through-hole 301 is substantially U-shaped, with an opening thereof provided toward the rear of the vehicle body, the flange 302 is provided on the front wall 3, toward the side provided toward the rear of the vehicle body, and the flange 302 is connected to the cabin rail 2 by welding. The through holes 301 and the flanges 302 are simple in structure and are connected with the cabin longitudinal beam 2, good sealing effect is achieved, and in addition, the flanges 302 are convenient to machine and shape.

To enhance the arrangement effect of the cabin longitudinal beam 2, the portion of the rear portion 202 connected to the front panel 3 is disposed to be gradually higher in the rear-to-front direction to fit the shape of the front panel 3. Such that the entire cabin rail 2 is substantially zigzag-shaped, and the energy absorbing portion 201 is higher than the rear portion 202 and extends forward in the front-rear direction of the entire vehicle. In specific implementation, the cabin longitudinal beam 2 in the embodiment adopts an integral laser splice welding plate, which is beneficial to reducing the number of parts and welding procedures, thereby improving the production efficiency.

In order to further improve the structural strength of the front part of the vehicle body, in this embodiment, a front wall cross member 4 is connected between the cabin stringers 2 on both sides, and the front wall cross member 4 is located on the front side of the front wall 3 and is connected to the front wall 3. As shown in fig. 1 to 3, the front wall cross member 4 is connected between the cabin longitudinal beam 2 and the front side of the front wall 3 in a welding manner, and a cavity is formed between the three parts in a surrounding manner, so that the transmission of collision force and the buffer effect are improved. Meanwhile, the front wall cross beam 4 is simple to process and convenient to arrange and implement.

As a preferred embodiment, in the present embodiment, both ends of the cowl cross member 4 have projecting portions 401 projecting forward, respectively, in the front-rear direction of the entire vehicle, and the projecting lengths of the projecting portions 401 are set to be larger in the direction of the cabin longitudinal member 2 directed to the same end. As shown in fig. 2 and 3, due to the arrangement of the protruding portions 401, two planes of the two protruding portions 401 which are arranged toward each other form an "eight" shape, which is advantageous in guiding the transmission dispersion effect of the collision force thereat, and the protruding portions 401 are simple in structure and easy to arrange and implement.

The first force transmitting portion in the present embodiment includes a first force transmitting plate 7, the first force transmitting plate 7 having a lateral portion 702 extending in the front-rear direction of the vehicle, and a longitudinal portion 701 extending in the up-down direction of the vehicle. The transverse portion 702 is attached to the bottom of the front wall 3 and is connected to the rocker 6, and the longitudinal portion 701 is connected to both the rocker 6 and the a pillar 9. The transverse portion 702 and the longitudinal portion 701 of the first force transfer plate 7 have simple structures, which facilitate the transfer of collision force to the rocker 6 and the front wall a-pillar 9, and can improve the strength of the force transfer structure.

As shown in fig. 1 and 2, a-pillars 9 are connected to both sides of the front wall 3 and extend in the up-down direction of the entire vehicle, and the bottom ends of the a-pillars 9 are connected to the front ends of the rocker beams 6. Of which only a part of the structure of the a-pillar 9 is illustrated. The left and right sides of the transverse portion 702 in the first force transfer plate 7 are welded to the bottom surface of the front wall 3, respectively, and the ends of the transverse portion 702 extend to the ends of the front wall 3. As shown in connection with fig. 6 and 7, the inner side edge of the longitudinal portion 701 is welded to the outer side of the cabin longitudinal beam 2, and the outer side edge of the longitudinal portion 701 is welded to the a-pillar 9, wherein the bottom of the outer side edge of the longitudinal portion 701 is disposed corresponding to the front end of the rocker beam 6. The top edge of the longitudinal portion 701 is welded to the front wall 3, so that a cavity is formed between the first force transfer plate 7 and the cabin longitudinal beam 2, between the front wall 3 and the a column 9, which is beneficial to improving the strength and the dispersing effect of the collision force.

In a specific implementation, the transverse portion 702 and the longitudinal portion 701 are integrally formed, and in order to further improve the use effect of the first force transfer plate 7, a plurality of reinforcing ribs 703 extending in the length direction are provided on the transverse portion 702, and of course, a solution in which the reinforcing ribs 703 are provided on the longitudinal portion 701 is also feasible.

In addition, in order to further improve the force transmission effect of the front part of the vehicle body, as a preferred embodiment, a second force transmission part is arranged between the cabin longitudinal beam 2 and the A column 9, the second force transmission part is positioned at the connecting part of the cabin longitudinal beam 2 and the front wall 3, and the second force transmission part is connected with the front wall. By arranging the second force transmission part, collision force on the cabin longitudinal beam 2 is directly transmitted to the A column 9, and the force transmission dispersion effect is further improved.

In a specific structure, as shown in fig. 2, 6 and 7, the second force transmission part is a second force transmission plate 8 arranged on the first force transmission plate 7, the front end of the second force transmission plate 8 is welded with the cabin longitudinal beam 2, and the rear end is connected with the front wall 3 and the a column 9. The upper edge of the second force transfer plate 8 is welded with the front wall 3, and the lower edge of the second force transfer plate 8 is welded with the cabin longitudinal beam 2. As a preferable structural example, the lower side of the second force transfer plate 8 is overlapped with the top side of the first force transfer plate 7 to improve the connection effect between the two, and the front wall beam 4 can be matched through the arrangement of the first force transfer plate 7 and the second force transfer plate 8 in the up-down direction of the whole vehicle, so that the structural strength of the front side of the front wall 3 is enhanced, the structural strength of the front wall 3 is improved, and the intrusion amount of the front wall 3 in front collision is reduced.

In addition, as shown in fig. 2, a reinforcing plate 10 is further provided on the other side of the cabin longitudinal beam 2 with respect to the lateral portion 702 of the first force transfer plate 7, the reinforcing plate 10 is connected to the cabin longitudinal beam 2 and the bottom of the front wall 3, and a cavity is formed between the front wall 3, the reinforcing plate 10 and the cabin longitudinal beam 2 in a surrounding manner to cooperate with the first force transfer plate 7, so that the connection strength between the cabin longitudinal beam 2 and the front wall 3 is improved, the force transfer effect is improved, the intrusion amount of the front wall 3 is reduced, and the effect of improving the front safety of the vehicle body is achieved.

As a preferred embodiment, as shown in fig. 1 and 2, the seat cross member 5 in the present embodiment can be transferred in both right and left directions of the whole vehicle when force is transferred, and the seat cross member 5 includes a front cross member 501 and a rear cross member 502 arranged at intervals in the front and rear directions of the whole vehicle, wherein the front cross member 501 has a notch through which the cabin longitudinal member 2 passes, and the cabin longitudinal member 2 is connected to the front end of the rear cross member 502. In particular, the notch is U-shaped with an opening facing the front floor 1. Of course, the front cross member 501 and the rear cross member 502 are also provided with a through hole through which the middle passage 101 passes. In order to further improve the connection effect of the cabin longitudinal beam 2 and the middle channel 101 with the front cross beam 501 and the rear cross beam 502, the front and rear side edges of the notch on the front cross beam 501 and the front and rear side edges of each through hole are respectively provided with a connection flanging, and the connection flanges are lapped on the outer side of the cabin longitudinal beam 2 and are welded with the cabin longitudinal beam 2 to realize connection. The edges of the ends of the cabin longitudinal beams 2 abut against the front side of the rear cross beam 502, and the connection is also achieved by means of welding. Likewise, the front cross member 501 and the rear cross member 502 are also connected to the center tunnel 101 by welding the connecting flanges to the center tunnel 101.

So set up, not only do benefit to the intensity that improves whole automobile body front portion biography power structure, but also make the collision force that transmits to automobile body rear portion via cabin longeron 2, can transmit to the threshold roof beam 6 of both sides respectively via front cross member 501 and rear cross member 502, when satisfying seat crossbeam 5 user demand, do benefit to the transmission efficiency and the stability of transmission that improve collision force.

It should be noted that, in this embodiment, the above-mentioned components are connected by welding, which is favorable for reducing the number of components, and the welding efficiency is high, which is favorable for improving the production efficiency. Of course, besides the welding connection mode, other connection structures meeting the connection requirement in the prior art can be adopted.

The front-body force transmission path in the present embodiment is shown in fig. 3, in which the vehicle body is based on a laterally symmetrical structure, and therefore only the main force transmission path on the vehicle body side is illustrated in the figure. As shown by the arrow in the figure, the front end of the cabin longitudinal beam 2 receives a collision force, which can be transmitted backward along the longitudinal direction of the cabin longitudinal beam 2 itself, and can also be transmitted to the front wall 3, and the collision force can be transmitted in the left-right direction of the whole vehicle, and at the same time, can also be transmitted to the threshold beam 6 and the a-pillar 9, so as to be transmitted and dispersed in the front-rear direction and the up-down direction of the whole vehicle.

The front part force transmission structure of the automobile body of this embodiment runs through the front wall 3 through the cabin longitudinal beam 2 and sets up to be connected with the seat crossbeam 5, do benefit to the integrality that improves force transmission structure, when the vehicle bumps, collision force can also transmit to front wall 3, threshold roof beam 6 and seat crossbeam 5 when the transmission backward through cabin longitudinal beam 2, make collision force disperse the transmission in whole front and back direction and left and right directions in succession, thereby do benefit to the transmission effect that improves the automobile body front part, and reduce the invasion volume of front wall 3, and then improve the security of the automobile body front part. In addition, the force transmission structure at the front part of the vehicle body is beneficial to canceling the arrangement of the torsion box, reduces the occupation amount of the arrangement space of the battery on the vehicle body, and has better practicability. Meanwhile, the force transmission structure of the front part of the automobile body is beneficial to reducing the number of parts, so that the assembly efficiency is improved, and the production cost is reduced.

The present embodiment also relates to a vehicle provided with the vehicle body front portion force transmitting structure as described above. According to the vehicle disclosed by the embodiment, the force transmission structure of the front part of the vehicle body is arranged, so that the force transmission effect of the front part of the vehicle body in the event of frontal collision is improved, and the safety of the vehicle is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A vehicle body front portion biography power structure, its characterized in that:

comprises cabin longitudinal beams (2) and threshold beams (6) which are arranged on the left side and the right side of a vehicle body, and seat cross beams (5) which are connected between the threshold beams (6) on the two sides;

the cabin longitudinal beam (2) penetrates through the front wall (3) and extends to be connected with the seat cross beam (5).

2. The vehicle body front portion force transmitting structure according to claim 1, characterized in that:

the cabin longitudinal beam (2) and the threshold beam (6) are provided with a first force transmission part, the first force transmission part is positioned at the connection part of the cabin longitudinal beam (2) and the front wall (3), and the first force transmission part is connected with the front wall.

3. A vehicle front portion force transmitting structure according to claim 2, characterized in that:

the first force transfer part comprises a first force transfer plate (7), wherein the first force transfer plate (7) is provided with a transverse part (702) extending along the front-rear direction of the whole vehicle and a longitudinal part (701) extending along the up-down direction of the whole vehicle;

the transverse part (702) is attached to the bottom of the front wall (3) and is connected with the threshold beam (6), and the longitudinal part (701) is connected with the threshold beam (6) and the A column (9).

4. The vehicle body front portion force transmitting structure according to claim 1, characterized in that:

the cabin longitudinal beam (2) and the A column (9) are provided with a second force transmission part, the second force transmission part is positioned at the connection part of the cabin longitudinal beam (2) and the front wall (3), and the second force transmission part is connected with the front wall.

5. The vehicle body front portion force transmitting structure according to claim 1, characterized in that:

a front wall cross beam (4) is connected between the cabin longitudinal beams (2) on two sides, and the front wall cross beam (4) is positioned on the front side of the front wall (3) and is connected with the front wall (3).

6. The vehicle body front portion force transmitting structure according to claim 5, characterized in that:

along the front-rear direction of the whole vehicle, both ends of the front wall cross beam (4) are respectively provided with a convex part (401) protruding forwards, and along the direction of the cabin longitudinal beam (2) pointing to the same end, the convex lengths of the convex parts (401) are gradually increased.

7. The vehicle body front portion force transmitting structure according to claim 1, characterized in that:

the front wall (3) is provided with a through hole (301) for the cabin longitudinal beam (2) to pass through and a flanging (302) arranged along the edge of the through hole (301), and the front wall (3) is connected with the cabin longitudinal beam (2) through the flanging (302).

8. The vehicle body front portion force transmitting structure according to claim 1, characterized in that:

the seat cross beam (5) comprises a front cross beam (501) and a rear cross beam (502) which are arranged at intervals along the front-rear direction of the whole vehicle;

the front cross beam (501) is provided with a notch for the cabin longitudinal beam (2) to pass through, and the cabin longitudinal beam (2) is connected with the front end of the rear cross beam (502).

9. A vehicle front portion force transmitting structure according to any one of claims 1 to 8, characterized in that:

the cabin longitudinal beam (2) has an energy absorbing portion (201) located on the front side of the front wall (3) and a rear portion (202) located on the rear side of the front wall (3) in the front-rear direction of the whole vehicle;

the rear end of the energy absorbing part (201) is provided with a convex part (203) protruding downwards, and the convex length of the convex part (203) is gradually increased along the direction pointing to the front wall (3).

10. A vehicle, characterized in that:

the vehicle is provided with the vehicle body front portion force transmitting structure according to any one of claims 1 to 9.