Commercial vehicle front wall energy absorption structure, frame and vehicle

Abstract

The invention relates to a commercial vehicle front wall energy absorption structure, a frame and a vehicle, the commercial vehicle front wall energy absorption structure comprises a front wall body, the front wall body comprises a front wall baffle and a front wall beam installed on the front wall baffle, a front wall reinforcing cavity is defined by the front wall beam and the front wall baffle, and a floor longitudinal beam installation position is arranged on the side, away from the front wall beam, of the front wall baffle; the part of the front wall beam protrudes and extends towards the side away from the front wall baffle, so that a first local protruding cavity is formed in the front wall reinforcing cavity. The first energy absorption mechanism is located in the first local protruding cavity, and the first energy absorption mechanism is fixed between the front enclosing beam and the floor longitudinal beam installation position. The first local protruding cavity is formed in the front wall reinforcing cavity, the first local protruding cavity can be firstly impacted when a vehicle is collided, the first energy absorption mechanism installed in the first local protruding cavity can absorb part of impact energy after the vehicle is collided, then the first energy absorption mechanism can move to make contact with the floor longitudinal beam, force conduction is achieved, and the energy absorption effect is improved. Therefore, the passive safety of the commercial vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of commercial vehicles, and in particular to a commercial vehicle front wall energy absorption structure, a frame and a vehicle. Background Art

[0002] In order to improve the passive safety of commercial vehicles, a reinforcement structure is usually added to the front wall of the commercial vehicle body-in-white. In the related art, the front wall of the commercial vehicle body-in-white is reinforced in the form of inner and outer panels. The overall front wall strength is enhanced by setting an inner reinforcement plate. However, the size of the inner reinforcement plate is huge. In order to improve the strength, multiple layers of parts are stacked and the material is thick, which increases the weight significantly. If the weight increase is limited, the material grade can only be upgraded, and the production cost will increase dramatically, making it difficult to achieve a balance between lightweight and low cost. Summary of the invention

[0003] The present application provides a commercial vehicle front enclosure energy absorption structure, frame and vehicle, which can solve the technical problem in the related technology that the overall front enclosure strength is enhanced by setting an internal reinforcement plate, which increases the weight significantly, and the only way to limit the weight increase is to upgrade the material grade, which will increase the production cost dramatically, making it difficult to achieve a balance between lightweight and low cost.

[0004] In a first aspect, an embodiment of the present application provides a commercial vehicle front enclosure energy absorption structure, comprising: a front enclosure body, the front enclosure body comprising a front enclosure baffle and a front enclosure beam mounted on the front enclosure baffle, the front enclosure beam and the front enclosure baffle forming a front enclosure reinforcement cavity, a side of the front enclosure baffle away from the front enclosure beam is provided with a floor longitudinal beam mounting position; a portion of the front enclosure beam protrudes toward a side away from the front enclosure baffle, so that a first local protruding cavity is formed in the front enclosure reinforcement cavity; a first energy absorbing mechanism, the first energy absorbing mechanism is located in the first local protruding cavity, and the first energy absorbing mechanism is fixed between the front enclosure beam and the floor longitudinal beam mounting position.

[0005] In combination with the first aspect, in one embodiment, the first energy absorbing mechanism includes a multi-cellular aluminum alloy structure, one side of the multi-cellular aluminum alloy structure is fixed to the front dash panel, and the other side of the multi-cellular aluminum alloy structure is fixed to the front dash beam.

[0006] In combination with the first aspect, in one embodiment, the multi-cellular aluminum alloy structure includes an aluminum alloy frame, the aluminum alloy frame encloses an energy absorption cavity, and a plurality of partition baffles are fixed to the inner side wall of the aluminum alloy frame, and the plurality of partition baffles divide the energy absorption cavity into a plurality of enclosed cavities.

[0007] In combination with the first aspect, in one implementation, a plurality of reinforcing plates are fixed to the periphery of the aluminum alloy frame, and the plurality of reinforcing plates are arranged on two opposite sides of the aluminum alloy frame.

[0008] In combination with the first aspect, in one embodiment, the front enclosure beam includes: a front enclosure upper cross beam, which is installed on the front enclosure baffle; two groups of front enclosure reinforcement beams, which are both installed on the front enclosure baffle, one end of each of the front enclosure reinforcement beams is fixed to the front enclosure upper cross beam, and the two groups of the front enclosure reinforcement beams are bent and extended downward and away from each other from the connection point of the front enclosure upper cross beam; a front enclosure lower cross beam, which is installed on the front enclosure baffle, the extension direction of the front enclosure lower cross beam is parallel to the extension direction of the front enclosure upper cross beam, and both ends of the front enclosure lower cross beam are fixed to different front enclosure reinforcement beams.

[0009] In combination with the first aspect, in one embodiment, each group of the front enclosure reinforcement beams includes: a front enclosure longitudinal beam, the extension direction of the front enclosure longitudinal beam is perpendicular to the front enclosure upper cross beam, and the two ends of the front enclosure longitudinal beam are respectively fixed to the front enclosure upper cross beam and the front enclosure lower cross beam, and the two ends of the front enclosure lower cross beam are respectively fixed to the front enclosure longitudinal beams of different groups; a suspension mounting beam, one end of the suspension mounting beam is fixed to the front enclosure longitudinal beam, and the other end is bent and extended toward a side away from the front enclosure longitudinal beam, the front enclosure longitudinal beam and the suspension mounting beam are both installed on the front enclosure baffle, and the first local protrusion cavity is arranged at one end of the suspension mounting beam close to the front enclosure lower cross beam.

[0010] In combination with the first aspect, in one embodiment, an armrest mounting position is provided on one side of the front enclosure upper cross beam close to the front enclosure longitudinal beam, a second local raised cavity is provided in the front enclosure upper cross beam at the armrest mounting position, and a second energy absorption mechanism is fixed in the second local raised cavity.

[0011] In combination with the first aspect, in one embodiment, the front wall lower cross beam includes a connecting section and fixed sections connected to both ends of the connecting section, the connecting section is installed on the front wall baffle, and the fixed section is fixed to a side of the front wall longitudinal beam away from the front wall baffle.

[0012] In a second aspect, an embodiment of the present application provides a vehicle frame, which includes the commercial vehicle front energy absorption structure as described above, and the vehicle frame also includes: a floor longitudinal beam, the floor longitudinal beam is connected to the front panel, and the floor longitudinal beam is directly opposite to the first energy absorption mechanism.

[0013] In a third aspect, an embodiment of the present application provides a vehicle, which includes the commercial vehicle front wall energy absorption structure as described above.

[0014] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0015] The front enclosure beam and the front enclosure baffle are enclosed to form a front enclosure reinforcement cavity, and a first local protruding cavity is formed in the front enclosure reinforcement cavity, so that the first local protruding cavity can be hit first when a collision occurs to the vehicle, and the first energy absorbing mechanism installed in the first local protruding cavity can absorb part of the impact energy after the collision of the vehicle, and can then move to contact the floor longitudinal beam to achieve force transmission, thereby improving the passive safety of commercial vehicles and solving the technical problem of finding a balance between lightweight and low cost in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the connection structure between the front wall body and the floor longitudinal beam provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure at A in the middle;

[0019] Figure 3 A schematic diagram of the main structure of the front enclosure body provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the connection structure between the first energy absorbing mechanism and the front dash panel provided in an embodiment of the present application;

[0021] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0022] Figure 6 A cross-sectional view of a first energy absorbing mechanism provided in an embodiment of the present application installed in a first local protruding cavity;

[0023] Figure 7 A schematic diagram of the main structure of the multi-cell aluminum alloy structure provided in the embodiment of the present application

[0024] Figure 8 A schematic diagram of the three-dimensional structure of the multi-cellular aluminum alloy structure provided in an embodiment of the present application.

[0025] In the figure:

[0026] 1. Front wall body; 11. Front wall baffle; 111. Floor longitudinal beam mounting position; 12. Front wall beam; 121. First local protruding cavity; 122. Front wall upper cross beam; 1221. Handrail mounting position; 123. Front wall reinforcement beam; 1231. Front wall longitudinal beam; 1232. Suspension mounting beam; 124. Front wall lower cross beam;

[0027] 2. first energy absorbing mechanism; 21. multi-cell aluminum alloy structure; 211. aluminum alloy frame; 212. partition baffle;

[0028] 3. Floor longitudinal beams;

[0029] 4. Front suspension. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The embodiment of the present application provides a commercial vehicle front enclosure energy absorption structure, which can solve the technical problem in the related art that the overall front enclosure strength is enhanced by setting an inner reinforcement plate, which increases the weight significantly, and the only way to limit the weight increase is to upgrade the material grade, which will increase the production cost dramatically, making it difficult to achieve a balance between lightweight and low cost.

[0032] See also Figure 1 and Figure 6 As shown, a commercial vehicle front wall energy absorption structure provided by an embodiment of the present application may include: a front wall body 1, the front wall body 1 includes a front wall baffle 11 and a front wall beam 12 installed on the front wall baffle 11, the front wall beam 12 and the front wall baffle 11 enclose a front wall reinforcement cavity, and a floor longitudinal beam mounting position 111 is provided on the side of the front wall baffle 11 away from the front wall beam 12; a part of the front wall beam 12 protrudes toward the side away from the front wall baffle 11, so that a first local protruding cavity 121 is formed in the front wall reinforcement cavity; a first energy absorption mechanism 2, the first energy absorption mechanism 2 is located in the first local protruding cavity 121, and the first energy absorption mechanism 2 is fixed between the front wall beam 12 and the floor longitudinal beam mounting position 111. The floor longitudinal beam mounting position 111 may face the floor longitudinal beam 3, and a bolt hole may be opened at the floor longitudinal beam mounting position 111 of the front wall baffle 11, so that the front wall baffle 11 is bolted to the floor longitudinal beam 3.

[0033] In the embodiment of the present application, the front enclosure beam 12 and the front enclosure baffle 11 are surrounded by a front enclosure reinforcement cavity, and a first local protruding cavity 121 is formed in the front enclosure reinforcement cavity. The front enclosure beam 12 provided with the first local protruding cavity 121 can protrude a certain distance toward the front of the vehicle along the length direction of the vehicle, so that when the vehicle collides, the first local protruding cavity 121 in the front enclosure beam 12 can be hit first, and the first energy absorbing structure is installed in the first local protruding cavity 121. After being hit at this location, the first energy absorbing structure 2 can absorb part of the impact energy, and the front enclosure beam 12 near the first local protruding cavity 121 moves backward a certain distance relative to the bottom plate longitudinal beam after being hit, and the floor longitudinal beam 3 of the front enclosure baffle 11 is installed to contact with the floor longitudinal beam 3, thereby realizing force transmission, thereby improving the passive safety of commercial vehicles and solving the technical problem that it is difficult to achieve a balance between lightweight and low cost in related technologies.

[0034] In some optional embodiments, see Figure 2 As shown, the first energy absorption mechanism 2 includes a multi-cellular aluminum alloy structure 21, one side of the multi-cellular aluminum alloy structure 21 is fixed to the front wall baffle 11, and the other side is fixed to the front wall beam 12. The multi-cellular aluminum alloy structure 21 can be extruded by an extrusion die, and is fixed in the first local protrusion cavity 121, and can be arranged directly opposite to the floor longitudinal beam 3. When the front wall beam 12 collides, the multi-cellular aluminum alloy structure 21 will be impacted and drive part of the front wall baffle 11 to touch the floor longitudinal beam 3, so that the impact force can be transmitted. At this time, the multi-cellular aluminum alloy structure 21 can absorb the collision energy through the orderly telescopic deformation of the cells. This orderly telescopic deformation can not only effectively reduce the impact force during the collision, but also convert the collision energy into mechanical energy, thereby reducing the damage to the vehicle and passengers. In addition, aluminum alloy, as a lightweight material, has a low density and a high strength. Therefore, the multi-cellular aluminum alloy structure 21 can achieve efficient energy absorption while maintaining a relatively light weight, which can effectively reduce the curb weight of the vehicle and improve the fuel economy and handling performance of the vehicle.

[0035] In some optional embodiments, see Figure 7 and Figure 8As shown, the multi-cellular aluminum alloy structure 21 includes an aluminum alloy frame 211, and the aluminum alloy frame 211 encloses an energy absorption cavity. The inner side wall of the aluminum alloy frame 211 is fixed with a plurality of partition baffles 212, and the plurality of partition baffles 212 divide the energy absorption cavity into a plurality of cavities. The outer frame of the multi-cellular aluminum alloy structure 21, the planes enclosed by the two ends are parallel to each other, and the planes of all the partition baffles 212 are set to maintain a vertical state with the plane enclosed by the cross section of the outer frame. In a collision accident, the multi-cellular aluminum alloy structure 21 can absorb a large amount of collision energy through the orderly deformation of the multiple cavities and partition baffles 212 inside it, thereby effectively reducing the impact on the vehicle and passengers. The partition baffles 212 not only play a role of separation, but also provide additional support for the entire structure during a collision, preventing the structure from collapsing rapidly due to excessive impact. The crash resistance of the multi-cellular aluminum alloy structure 21 can be further improved by optimizing the design, such as adjusting the shape, size and arrangement of the cells. In the embodiment of the present application, the energy absorption cavity can be enclosed into a structure whose cross section is approximately rectangular, but relative to the rectangle, the four corners of the rectangle are cut so that the cross section is enclosed into an octagon, the long side of the octagon corresponds to the long side of the rectangle, and the short side corresponds to the short side of the rectangle. The sides formed after cutting the four corners are regarded as the hypotenuse of the octagon, and the partition baffles 212 are fixed correspondingly near the hypotenuse. The plate surfaces of the two partition baffles 212 are perpendicular to each other and fixed to each other, and the ends of the partition baffles 212 that are away from each other are fixed to the octagonal structure. Near the hypotenuse, the hypotenuse, the partition baffle 212, part of the long side and part of the short side together form a cavity. The hypotenuse in the octagonal structure can better disperse stress when impacted, reduce the concentrated force on the corner of the structure, thereby enhancing the overall strength of the structure. The existence of the hypotenuse also makes the structure less likely to deform or break when impacted, thereby improving the durability of the structure. Furthermore, the octagonal structure allows the energy absorption cavity to accommodate more partition baffles 212 and cavities while maintaining a smaller volume, thereby improving the utilization of space. It should be understood that the aluminum alloy frame 211 and the partition baffle 212 of the multi-cell aluminum alloy structure 21 can be integrally formed.

[0036] In some optional embodiments, a plurality of reinforcing plates are fixed to the peripheral side of the aluminum alloy frame 211, and the plurality of reinforcing plates are arranged on opposite sides of the aluminum alloy frame 211. The plurality of reinforcing plates are symmetrically arranged along the aluminum alloy frame 211 of the multi-cellular aluminum alloy structure 21, which can significantly enhance the structural stability of the aluminum alloy frame 211, so that the first energy absorbing mechanism 2 can better maintain its shape when impacted, thereby more effectively absorbing and dispersing energy.

[0037] In some optional embodiments, the front enclosure beam 12 may include: a front enclosure upper cross beam 122, which is installed on the front enclosure baffle 11; two groups of front enclosure reinforcement beams 123, which are both installed on the front enclosure baffle 11, one end of each of the front enclosure reinforcement beams 123 is fixed to the front enclosure upper cross beam 122, and the two groups of the front enclosure reinforcement beams 123 are bent and extended downward and away from each other from the connection point of the front enclosure upper cross beam 122; a front enclosure lower cross beam 124, which is installed on the front enclosure baffle 11, the extension direction of the front enclosure lower cross beam 124 is parallel to the extension direction of the front enclosure upper cross beam 122, and both ends of the front enclosure lower cross beam 124 are fixed to different front enclosure reinforcement beams 123. It should be understood that the downward direction in the embodiment of the present application may refer to the up-down direction of the vehicle. In addition, the upper cross beam 122, the front wall reinforcement beam 123 and the lower cross beam 124 may be formed by drawing, and then welded and fixed, and the front wall baffle 11 beam structure may enclose the front wall reinforcement cavity. The front wall baffle 11 may be bolted or welded to the upper cross beam 122, the front wall reinforcement beam 123 and the lower cross beam 124, respectively, and the two ends of the lower cross beam 124 may be fixed to different front wall reinforcement beams 123, so that the force transmission between the beams can be effectively realized. In the embodiment of the present application, by providing the upper cross beam 122, the front wall reinforcement beam 123 and the lower cross beam 124, the overall rigidity of the front wall beam 12 may be enhanced, so that the front wall beam 12 may have stronger support.

[0038] In some optional embodiments, see Figure 4 and Figure 5As shown, each group of the front enclosure reinforcement beams 123 may include: a front enclosure longitudinal beam 1231, the extension direction of the front enclosure longitudinal beam 1231 is perpendicular to the front enclosure upper cross beam 122, and the two ends of the front enclosure longitudinal beam 1231 are respectively fixed to the front enclosure upper cross beam 122 and the front enclosure lower cross beam 124, and the two ends of the front enclosure lower cross beam 124 are respectively fixed to the front enclosure longitudinal beams 1231 of different groups; a suspension mounting beam 1232, one end of the suspension mounting beam 1232 is fixed to the front enclosure longitudinal beam 1231, and the other end is bent and extended toward a side away from the front enclosure longitudinal beam 1231, the front enclosure longitudinal beam 1231 and the suspension mounting beam 1232 are both installed on the front enclosure baffle 11, and the first local protrusion cavity 121 is provided at one end of the suspension mounting beam 1232 close to the front enclosure lower cross beam 124. In the embodiment of the present application, the suspension mounting beams 1232 in the two groups of the front wall reinforcement beams 123 are bent and extended in directions away from each other, and the suspension mounting beams 1232 in the two groups of the front wall reinforcement beams 123 are symmetrically arranged along the central axis of the front wall upper cross beam 122. In the embodiment of the present application, two front wall longitudinal beams 1231 and two suspension mounting beams 1232 are provided, and the front wall longitudinal beams 1231 and the suspension mounting beams 1232 symmetrically arranged along the central axis of the front wall upper cross beam 122 can make the front wall body 1 after being hit, The force can be more evenly transmitted in the front wall body 1 and the remaining structures of the vehicle, further enhancing the overall support performance of the front wall body 1. The two ends of the front wall longitudinal beam 1231 can be welded to the front wall upper cross beam 122 and the front wall lower cross beam 124, respectively, and the front wall longitudinal beam 1231 is perpendicular to the front wall upper cross beam 122 and the front wall lower cross beam 124, respectively. One end of the suspension mounting beam 1232 can be fixed to the front wall lower cross beam 124, and the suspension mounting beam and the front wall longitudinal beam 1231 are drawn and formed in one piece.

[0039] In some optional embodiments, see Figure 3As shown, the side of the front enclosure upper cross beam 122 close to the front enclosure longitudinal beam 1231 is provided with an armrest mounting position 1221, and a second local protruding cavity is provided in the front enclosure upper cross beam 122 at the armrest mounting position 1221, and a second energy absorbing mechanism is fixed in the second local protruding cavity. The second local protruding cavity can also protrude a certain distance toward the front of the vehicle along the length direction of the vehicle. The second local protruding cavity provided at the armrest mounting position can provide a gripping point for the driver when wiping the front windshield. In addition, when the vehicle is hit, the armrest mounting position 1221 corresponding to the second local protruding cavity can be hit first, and the second energy absorbing mechanism fixed in the second local protruding cavity can quickly play a role, absorb part of the impact energy, reduce the damage to the vehicle and passengers, and improve the overall safety performance of the vehicle. In the embodiment of the present application, considering the actual vehicle collision situation, the armrest installation part of the front enclosure upper cross beam 122 needs to be strengthened because the convex structure is the part that contacts the collision object. The part that contacts the collision object is the suspension installation part, which plays the role of transmitting the collision force from the front enclosure to the floor longitudinal beam 3. It should be understood that the two sides of the front enclosure body 1 can be connected to the side enclosure of the vehicle respectively, so that the force received by the front enclosure body 1 when the vehicle is hit can be transmitted to the side enclosure structure, further realizing the force transmission. Preferably, the second energy absorbing mechanism can have the same structure as the first energy absorbing mechanism 2, and its two ends are respectively fixed to the inner side wall of the front enclosure upper cross beam 122 and the front enclosure baffle 11, and the first energy absorbing mechanism 2 and the second energy absorbing mechanism can be double-hat polygonal aluminum alloy profiles, which provide energy absorption and force conduction at the key collision position, and achieve lightweight and low cost while ensuring the safety of the vehicle body.

[0040] Preferably, the dash panel 11 can be made of D170Y with a thickness of 1.2 mm, the armrest mounting position 1221 uses 1300 MPa hot-formed steel with a thickness of 1.2 mm, and the suspension mounting beam 1232 uses D170Y with a thickness of 1.2 mm. Both places add a multi-cell aluminum alloy profile with a depth of 40 mm, a width of 200 mm, and a thickness of 1.5 mm. In the embodiment of the present application, different profiles are used for the dash panel, the armrest mounting position, and the suspension mounting beam, and the energy absorption capacity of each profile is different. At this time, the external boundaries between the structures are the same but the internal structures are different, which can change the energy absorption capacity of the commercial vehicle dash energy absorption structure.

[0041] In some optional embodiments, the first energy absorbing mechanism 2 is welded in the first local protruding cavity 121 by low-energy welding, and the second energy absorbing mechanism is welded in the second local protruding cavity by low-energy welding, that is, the penetration depth during welding can be controlled to achieve spatter-free droplet transition and good metallurgical connection. The low-energy welding method coordinates the wire feeding and droplet transition process. When a short circuit occurs, the wire feeder retracts the welding wire, so that the liquid bridge between the welding wire and the droplet is broken under a low current state, so that the droplet transition is spatter-free.

[0042] In some optional embodiments, the end of the front wall longitudinal beam 1231 close to the armrest mounting position 1221 is mounted in the middle of the front wall upper cross beam 122. That is, the armrest mounting positions 1221 are far away from the ends of the front wall upper cross beam 122. The middle here can refer to any position except the two ends of the front wall upper cross beam 122. In the embodiment of the present application, specifically, the two armrest mounting positions 1221 can be respectively set at 2 / 5 and 4 / 5 of the front wall upper cross beam 122. It should be understood that the armrest mounting position 1221 can be used to install the vehicle armrest. The first priority of the armrest installation position is still ergonomics. The two armrests and the protective step under the bumper form a Y shape. In addition, where the armrest is set, the angle of the opening that is comfortable for people to hold should also be considered. The mounting points at both ends of the armrest are distributed on both sides of the front enclosure vertical beam so that the force can be evenly distributed to the front enclosure longitudinal beam 1231, so as to effectively and quickly transmit the force to the body side enclosure and other front enclosure beams through the front enclosure upper cross beam 122.

[0043] In some optional embodiments, the front wall lower cross beam 124 includes a connecting section and fixed sections connected to both ends of the connecting section, the connecting section is installed on the front wall panel 11, and the fixed section is fixed to the side of the front wall longitudinal beam 1231 away from the front wall panel 11. Preferably, the length of the fixed section along the height direction of the vehicle is greater than the length of the connecting section, so that the fixed section can have more contact and fixing area with the front wall longitudinal beam 1231, thereby enhancing the installation stability of the front wall lower cross beam 124 and the front wall longitudinal beam 1231.

[0044] The embodiment of the present application also provides a vehicle frame, which may include the above-mentioned commercial vehicle front energy absorption structure, and the vehicle frame further includes: a floor longitudinal beam 3, the floor longitudinal beam 3 is connected to the front wall baffle 11, and the floor longitudinal beam 3 is directly opposite to the first energy absorption mechanism 2. The front wall baffle 11 may have a plane at the floor longitudinal beam installation position 111, and there is an inclination angle between the plane and the floor longitudinal beam 3, and the inclination angle can form a certain space between the floor longitudinal beam 3 and the front wall baffle 11 for avoidance, and other positions of the front wall baffle 11 may also be perpendicular to the floor longitudinal beam 3. Preferably, the front wall baffle 11 is divided into an inclined plate and a straight plate along the vertical direction of the vehicle. The plate surface below the floor longitudinal beam installation position 111 is a straight plate, and its plate surface is perpendicular to the floor longitudinal beam 3. The positions above the floor longitudinal beam installation position 111 are inclined plates, and their plate surfaces have an inclination angle with the floor longitudinal beam 3. It should be understood that the floor longitudinal beam 3 is horizontally arranged. After the front wall body 1 is hit, it can move toward the side close to the floor longitudinal beam 3. When the inclined plate contacts the floor longitudinal beam 3, it can also be perpendicular to the floor longitudinal beam 3 to absorb the impact force most directly. In addition, the inclination angle between the floor longitudinal beam 3 and the front wall body 1 can also enhance the aesthetics of the device. Since the front suspension 4 on the body installed at the lower part of the front wall body 1 needs to be hidden in the front cover of the cab, this arrangement method effectively prevents the front suspension 4 from popping out.

[0045] An embodiment of the present application further provides a vehicle, characterized in that it includes the above-mentioned commercial vehicle front wall energy absorption structure. The vehicle also includes the commercial vehicle front wall energy absorption structure in any of the above-mentioned embodiments, which will not be repeated here.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A commercial vehicle front wall energy absorption structure, characterized in that: It includes: A front enclosure body (1), the front enclosure body (1) comprising a front enclosure baffle (11) and a front enclosure beam (12) mounted on the front enclosure baffle (11), the front enclosure beam (12) and the front enclosure baffle (11) enclosing a front enclosure reinforcement cavity, and a floor longitudinal beam (3) mounting position (111) is provided on a side of the front enclosure baffle (11) away from the front enclosure beam (12); A portion of the front wall beam (12) protrudes toward a side away from the front wall baffle (11), so that a first local protruding cavity (121) is formed in the front wall reinforcement cavity; A first energy absorbing mechanism (2), the first energy absorbing mechanism (2) is located in the first local protruding cavity (121), and the first energy absorbing mechanism (2) is fixed between the front enclosure beam (12) and the installation position (111) of the floor longitudinal beam (3).

2. The commercial vehicle front wall energy absorption structure according to claim 1, characterized in that: The first energy absorbing mechanism (2) comprises a multi-cellular aluminum alloy structure (21), one side of the multi-cellular aluminum alloy structure (21) is fixed to the front dash panel (11), and the other side of the multi-cellular aluminum alloy structure (21) is fixed to the front dash beam (12).

3. The commercial vehicle front wall energy absorption structure according to claim 2, characterized in that: The multi-cell aluminum alloy structure (21) comprises an aluminum alloy frame (211), the aluminum alloy frame (211) enclosing an energy absorption cavity, a plurality of partition baffles (212) being fixed to the inner side wall of the aluminum alloy frame (211), and the plurality of partition baffles (212) dividing the energy absorption cavity into a plurality of package cavities.

4. The commercial vehicle front wall energy absorption structure according to claim 3, characterized in that: A plurality of reinforcing plates are fixed to the peripheral side of the aluminum alloy frame (211), and the plurality of reinforcing plates are arranged on two opposite sides of the aluminum alloy frame (211).

5. The commercial vehicle front wall energy absorption structure according to claim 1, characterized in that: The front wall beam (12) comprises: A front dash upper cross beam (122), wherein the front dash upper cross beam (122) is mounted on the front dash baffle (11); Two groups of front wall reinforcement beams (123), both groups of the front wall reinforcement beams (123) are installed on the front wall baffle (11), one end of each of the front wall reinforcement beams (123) is fixed to the front wall upper cross beam (122), and the two groups of the front wall reinforcement beams (123) are bent and extended downwardly and in directions away from each other from the connection point of the front wall upper cross beam (122); A front enclosure lower cross beam (124), wherein the front enclosure lower cross beam (124) is mounted on the front enclosure baffle (11), an extension direction of the front enclosure lower cross beam (124) is parallel to an extension direction of the front enclosure upper cross beam (122), and both ends of the front enclosure lower cross beam (124) are fixed to different front enclosure reinforcement beams (123).

6. The commercial vehicle front wall energy absorption structure according to claim 5, characterized in that: Each group of the front wall reinforcement beams (123) comprises: A front enclosure longitudinal beam (1231), wherein the extension direction of the front enclosure longitudinal beam (1231) is perpendicular to the front enclosure upper cross beam (122), and two ends of the front enclosure longitudinal beam (1231) are respectively fixed to the front enclosure upper cross beam (122) and the front enclosure lower cross beam (124), and two ends of the front enclosure lower cross beam (124) are respectively fixed to different groups of the front enclosure longitudinal beams (1231); A suspension mounting beam (1232), one end of which is fixed to the front enclosure longitudinal beam (1231), and the other end of which is bent and extended toward a side away from the front enclosure longitudinal beam (1231), the front enclosure longitudinal beam (1231) and the suspension mounting beam (1232) are both mounted on the front enclosure baffle (11), and the first local protruding cavity (121) is provided at one end of the suspension mounting beam (1232) close to the front enclosure lower cross beam (124).

7. The commercial vehicle front wall energy absorption structure according to claim 6, characterized in that: An armrest mounting position (1221) is provided on one side of the front enclosure upper cross beam (122) close to the front enclosure longitudinal beam (1231), a second local protruding cavity is provided in the front enclosure upper cross beam (122) at the armrest mounting position (1221), and a second energy absorbing mechanism is fixed in the second local protruding cavity.

8. The commercial vehicle front wall energy absorption structure according to claim 6, characterized in that: The front enclosure lower cross beam (124) comprises a connecting section and fixed sections connected to both ends of the connecting section, the connecting section is mounted on the front enclosure baffle (11), and the fixed section is fixed to a side of the front enclosure longitudinal beam (1231) away from the front enclosure baffle (11).

9. A vehicle frame, characterized in that: It comprises the commercial vehicle front wall energy absorption structure according to any one of claims 1 to 8, and the frame further comprises: A floor longitudinal beam (3), wherein the floor longitudinal beam (3) is connected to the front enclosure plate (11), and the floor longitudinal beam (3) is directly opposite to the first energy absorbing mechanism (2).

10. A vehicle, characterized in that: The commercial vehicle front wall energy absorption structure comprises the commercial vehicle front wall energy absorption structure as claimed in any one of claims 1 to 8.

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