Triangular beam and vehicle

Abstract

The invention relates to a triangular beam and a vehicle, the triangular beam comprises a cross beam assembly and two longitudinal beams, the cross beam assembly comprises a front cross beam and a rear cross beam, the rear cross beam is arranged on the rear side of the front cross beam at an interval and is used for being connected with a front wall plate of the vehicle, and the two longitudinal beams are arranged in the direction of the triangular beam from front to back. The two longitudinal beams obliquely extend along the tendency of approaching each other, the front cross beam is used for being connected with a front shock absorption tower of the vehicle, the two longitudinal beams are arranged on the left side and the right side of the cross beam assembly respectively, the front ends of the longitudinal beams are connected with the front cross beam, and the rear ends of the longitudinal beams are connected with the rear cross beam. The inner circumferential contour of the longitudinal section of at least one of the front cross beam, the rear cross beam and the longitudinal beam is a U-shaped groove. The triangular beam can absorb energy when a vehicle collides, the collision performance of the vehicle is improved, the torsion resistance of the vehicle can be improved, and the service life of the vehicle can be prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a triangular beam and a vehicle. Background Art

[0002] With the development of the automotive industry, people have put forward higher requirements for the strength, reliability and use safety of automobiles. For example, in automotive crash test trials and vehicle traffic accidents, it is required that the front structure of the vehicle needs to absorb collision energy to minimize the deformation and intrusion of the passenger compartment.

[0003] In the related art, the design of the front structure of the vehicle is unreasonable, resulting in poor frontal and offset collision performance of the vehicle, affecting the safety of the vehicle, and the vehicle is prone to resonance when driving on bumpy roads, with a large amount of noise and poor torsional resistance. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of the present invention provides a triangular beam, which can absorb energy during vehicle collision, improve the collision performance of the vehicle, and can reduce the generation of noise and improve the torsional resistance of the vehicle.

[0006] An embodiment of the present invention also provides a vehicle.

[0007] The triangular beam of the embodiment of the present invention includes: a cross beam assembly, the cross beam assembly includes a front cross beam and a rear cross beam, the rear cross beam is arranged at the rear side of the front cross beam at intervals and is used to connect with the front wall panel of the vehicle, and the front cross beam is used to connect with the front shock absorber tower of the vehicle; two longitudinal beams, the two longitudinal beams are respectively arranged on the left and right sides of the cross beam assembly, and in the front-to-rear direction of the triangular beam, the two longitudinal beams extend obliquely in a trend of approaching each other, the front end of the longitudinal beam is connected to the front cross beam, the rear end of the longitudinal beam is connected to the rear cross beam, and the inner peripheral contour of the longitudinal section of at least one of the front cross beam, the rear cross beam and the longitudinal beam is a U-shaped groove.

[0008] According to the triangular beam of an embodiment of the present invention, since the front cross beam is connected to the front shock tower of the vehicle, the rear cross beam is connected to the front wall panel of the vehicle, and the front and rear ends of the longitudinal beam are respectively connected to the front cross beam and the rear cross beam, energy absorption can be carried out when the front part structure of the vehicle is collided, so as to reduce the deformation and intrusion amount of the passenger compartment. And since the two longitudinal beams are arranged on the left and right sides of the cross beam assembly, and in the front-to-rear direction of the triangular beam, the two longitudinal beams extend obliquely in a trend of approaching each other, the torsional resistance performance of the vehicle can be improved, and the fatigue damage caused by vibration of the vehicle can be reduced. On the other hand, since the inner peripheral contour of the longitudinal section of at least one of the front cross beam, the rear cross beam and the longitudinal beam is a U-shaped groove, the bending resistance performance and vibration isolation ability of the triangular beam can be enhanced, which is beneficial to reducing the vibration amplitude of the triangular beam, and further reducing the noise generated when the vehicle is running.

[0009] In some embodiments, the inner peripheral contours of the longitudinal sections of the front cross beam, the rear cross beam and the longitudinal beam are all U-shaped grooves; and / or, the U-shaped groove opens towards at least one of the upper side and the lower side of the triangular beam.

[0010] In some embodiments, the front cross beam includes a first front cross beam and a second front cross beam. The second front cross beam is arranged between the first front cross beam and the rear cross beam. The front end of the longitudinal beam is connected to the end of the first front cross beam. The second front cross beam penetrates through the two longitudinal beams respectively along the left-right direction of the vehicle. The inner peripheral contours of the longitudinal sections of the first front cross beam, the second front cross beam, the rear cross beam and the longitudinal beam are all U-shaped grooves opening upwards.

[0011] In some embodiments, the upper edge of the rear wall of the second front cross beam has a first arc-shaped groove recessed downwards, and the first arc-shaped groove extends along the length direction of the second front cross beam.

[0012] In some embodiments, the cross beam assembly further includes a connecting beam. The front end of the connecting beam is connected to the first front cross beam, and the rear end of the connecting beam is connected to the second front cross beam. At least one first suspension mounting position is provided on the first front cross beam, and at least two second suspension mounting positions are provided on the second front cross beam. The second suspension mounting positions are arranged at the connection position of the connecting beam and the second front cross beam. In the projection plane orthogonal to the front-to-rear direction of the triangular beam, the first suspension mounting position is arranged between the two second suspension mounting positions.

[0013] In some embodiments, the side wall thickness of the connecting beam is greater than the bottom wall thickness of the connecting beam; and / or, the bottom wall of the connecting beam is provided with a hollow hole.

[0014] In some embodiments, the second suspension mounting position is connected to the front wall of the second front cross member. A first reinforcing rib is provided on the second front cross member. One end of the first reinforcing rib is connected to the second suspension mounting position, and the other end of the first reinforcing rib is connected to the rear wall of the second front cross member; and / or, a second reinforcing rib is provided on the second front cross member. An included angle is formed between the extending direction of the second reinforcing rib and the extending direction of the second front cross member. The second reinforcing rib is connected to the longitudinal beam, the second suspension mounting position, and the front and rear walls of the second front cross member; and / or, a third reinforcing rib is provided on the first front cross member. An included angle is formed between the extending direction of the third reinforcing rib and the extending direction of the first front cross member. There are at least two third reinforcing ribs which are arranged on the left and right sides of the first suspension mounting position. The third reinforcing rib is connected to the front and rear walls of the first front cross member and the first suspension mounting position.

[0015] In some embodiments, a fourth reinforcing rib is provided on the longitudinal beam. The fourth reinforcing rib extends along the front-rear direction of the vehicle and is connected to the first front cross member, the second front cross member, and the longitudinal beam; and / or, a fifth reinforcing rib is provided inside the second front cross member. The fifth reinforcing rib is arranged adjacent to the end of the second front cross member. The fifth reinforcing rib is connected to the front wall of the second front cross member, the rear wall of the front cross member, and the outer wall of the longitudinal beam and encloses a closed ring.

[0016] In some embodiments, a plurality of sixth reinforcing ribs are provided inside the first front cross member. The plurality of sixth reinforcing ribs are arranged in sequence along the extending direction of the first front cross member. An included angle is formed between the extending direction of the sixth reinforcing rib and the extending direction of the first front cross member, and a second arc-shaped groove with a downward depression is formed on the upper edge of the sixth reinforcing rib.

[0017] In some embodiments, a refrigeration integrated management system mounting position is provided inside the first front cross member. The refrigeration integrated management system mounting position is a sleeve structure extending vertically. The rear side of the refrigeration integrated management system mounting position is connected to the rear wall of the first front cross member. The front side of the refrigeration integrated management system mounting position is open and is connected to the sixth reinforcing rib.

[0018] In some embodiments, a plurality of front wall panel mounting positions are provided on the rear cross member. The plurality of front wall panel mounting positions are arranged at intervals along the length direction of the rear cross member, and at least part of the front wall panel mounting positions are arranged staggeredly along the up-down direction of the rear cross member.

[0019] In some embodiments, the front wall panel mounting position includes two first front wall panel mounting positions and at least one second front wall panel mounting position. The two first front wall panel mounting positions are respectively arranged at both ends of the rear cross member and are arranged adjacent to the outer wall of the longitudinal beam. The second front wall panel mounting position is arranged between the two first front wall panel mounting positions.

[0020] In some embodiments, a plurality of HVAC system installation positions are provided on the rear crossbeam. The plurality of HVAC system installation positions are arranged at intervals along the extending direction of the rear crossbeam. A seventh reinforcing rib arranged in a zigzag manner is provided on the rear crossbeam. The inner and outer walls of the longitudinal beam, the front and rear walls of the rear crossbeam, and at least part of the HVAC system installation positions are all connected to the seventh reinforcing rib.

[0021] In some embodiments, a connection base surface is provided at the connection position between the second front crossbeam and the longitudinal beam. The connection base surface is connected to the inner wall of the longitudinal beam and the rear wall of the second front crossbeam. An eighth reinforcing rib is provided in the longitudinal beam. The eighth reinforcing rib is connected to the outer wall and the inner wall of the longitudinal beam, and the front end of the eighth reinforcing rib is connected to the connection base surface.

[0022] In some embodiments, a ninth reinforcing rib is provided in the longitudinal beam. The front end of the ninth reinforcing rib is connected to the outer wall of the longitudinal beam, and the rear end of the ninth reinforcing rib is connected to the ninth reinforcing rib; and / or, the crossbeam assembly further includes a connecting beam. The front end of the connecting beam is connected to the first front crossbeam, and the rear end of the connecting beam is connected to the second front crossbeam. The connecting beam, the connection base surface, and the eighth reinforcing rib extend along the same straight line; and / or, the thickness of the connection base surface is not greater than the thickness of the bottom wall of any one of the second front crossbeam and the longitudinal beam.

[0023] In some embodiments, in the front-to-rear direction of the triangular beam, the positions of the first front crossbeam, the second front crossbeam, and the rear crossbeam gradually rise, and the longitudinal beam gradually extends obliquely upward.

[0024] In some embodiments, the rear crossbeam and the longitudinal beam located between the second front crossbeam and the rear crossbeam are defined as a dedicated structure, and the first front crossbeam, the second front crossbeam, and the longitudinal beam located between the first front crossbeam and the second front crossbeam are a common structure. The dedicated structure is used for size adjustment according to different vehicle models, and the common structure is used to remain constant in different vehicle model designs.

[0025] A vehicle according to another embodiment of the present invention includes a triangular beam, where the triangular beam is the triangular beam according to any one of the embodiments of the present invention; a vehicle body, where the vehicle body includes a front wall panel and a front shock tower. The front crossbeam is connected to the front shock tower, and the rear crossbeam is connected to the front wall panel.

[0026] A vehicle according to an embodiment of the present invention. Since the front cross member is connected to the front shock tower of the vehicle, the rear cross member is connected to the front wall panel of the vehicle, and the front and rear ends of the longitudinal beam are respectively connected to the front cross member and the rear cross member, energy absorption can be carried out when the front part structure of the vehicle is collided, so as to reduce the deformation and intrusion amount of the passenger compartment. And since the two longitudinal beams are arranged on the left and right sides of the cross member assembly, the torsional resistance performance of the vehicle can be improved, and the fatigue damage caused by vibration of the vehicle can be reduced. On the other hand, since the inner peripheral contour of the longitudinal section of at least one of the front cross member, the rear cross member and the longitudinal beam is a U-shaped groove, the bending resistance performance and vibration isolation ability of the triangular beam can be enhanced, which is beneficial to reducing the vibration amplitude of the triangular beam, and further reducing the noise generated during vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the front view of the triangular beam according to an embodiment of the present invention.

[0028] Figure 2 is the axonometric view of the triangular beam according to an embodiment of the present invention.

[0029] Figure 3 is the side view of the triangular beam according to an embodiment of the present invention.

[0030] Figure 4 is the schematic view of the triangular beam from another perspective according to an embodiment of the present invention.

[0031] Figure 5 is the partial schematic view of the triangular beam according to another embodiment of the present invention.

[0032] Figure 6 is the front view of the triangular beam according to another embodiment of the present invention.

[0033] Figure 7 is the side view of the triangular beam according to another embodiment of the present invention.

[0034] REFERENCE SIGNS:

[0035] 1. Cross member assembly;

[0036] 11. Front cross member; 111. First front cross member; 1111. First mounting position for suspension; 1112. Third reinforcing rib; 1113. First mounting position for shock tower; 1114. Mounting position for storage box; 1115. Sixth reinforcing rib; 11151. Second arc-shaped groove; 1116. Mounting position for low-voltage wire harness; 1117. Mounting position for high-voltage wire harness; 112. Second front cross member; 1121. Second mounting position for suspension; 1122. First reinforcing rib; 1123. Second reinforcing rib; 1124. Second mounting position for shock tower; 1125. Mounting position for air filter; 1126. First arc-shaped groove; 1127. Fifth reinforcing rib; 1128. Parallel rib; 113. Mounting position for refrigeration integrated management system; 114. Mounting position for coolant circuit integration module;

[0037] 12. Rear crossbeam; 121. Front wall panel mounting position; 1211. First front wall panel mounting position; 1212. Second front wall panel mounting position; 122. HVAC system mounting position; 123. Seventh reinforcing rib;

[0038] 13. Connecting beam; 131. Hollow hole; 14. Connecting base surface; 15. Connecting rib; 151. First connecting rib; 152. Second connecting rib;

[0039] 2. Longitudinal beam assembly; 21. Longitudinal beam; 211. Fourth reinforcing rib; 212. Eighth reinforcing rib; 213. Ninth reinforcing rib; 214. Air inlet area;

[0040] 3. U-shaped groove. Detailed implementation manners

[0041] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] Reference will be made below to the attached Figures 1 to 7 Describe the triangular beam and the vehicle according to the embodiments of the present invention.

[0043] As Figure 1 , Figure 2 and Figure 5 shown, the triangular beam of the embodiment of the present invention includes: a crossbeam assembly 1 and a longitudinal beam assembly 2. The crossbeam assembly 1 includes a front crossbeam 11 and a rear crossbeam 12. The longitudinal beam assembly 2 includes two longitudinal beams 21. The rear crossbeam 12 is arranged at the rear side of the front crossbeam 11 at intervals and is used to connect with the front wall panel (not shown) of the vehicle. The front crossbeam 11 is used to connect with the front shock tower (not shown) of the vehicle. The two longitudinal beams 21 are respectively arranged on the left and right sides of the crossbeam assembly 1. The front end of the longitudinal beam 21 is connected to the front crossbeam 11, and the rear end of the longitudinal beam 21 is connected to the rear crossbeam 12. The inner peripheral contour of the longitudinal section of at least one of the front crossbeam 11, the rear crossbeam 12 and the longitudinal beam 21 is a U-shaped groove 3.

[0044] According to the triangular beam of an embodiment of the present invention, since the front cross beam 11 is connected to the front shock tower of the vehicle, the rear cross beam 12 is connected to the front wall panel of the vehicle, and the front and rear ends of the longitudinal beam 21 are respectively connected to the front cross beam 11 and the rear cross beam 12, energy absorption can be carried out when the front part structure of the vehicle is collided, so as to reduce the deformation and intrusion amount of the passenger compartment. And because the two longitudinal beams 21 are arranged on the left and right sides of the cross beam assembly 1, and in the front-to-rear direction of the triangular beam, the two longitudinal beams extend obliquely in a trend of approaching each other, the torsional resistance performance of the vehicle can be improved, and the fatigue damage caused by vibration of the vehicle can be reduced. On the other hand, since the inner peripheral contour of the longitudinal section of at least one of the front cross beam 11, the rear cross beam 12 and the longitudinal beam 21 is a U-shaped groove 3, the bending resistance performance and vibration isolation ability of the triangular beam can be enhanced, which is beneficial to reducing the vibration amplitude of the triangular beam, and further reducing the noise generated during vehicle driving and improving the NVH performance level of the wheels. And the lateral stiffness of the shock tower can be improved, and the handling and stability performance of the wheels can be improved.

[0045] It can be understood that the front wall panel is used to separate the passenger compartment and the engine compartment. In other words, the front wall panel is located on the front side of the passenger compartment, and the rear cross beam 12 extends in the left-right direction of the vehicle and is connected to the front wall panel. The front shock tower is located in the front area of the vehicle engine compartment, and there are two front shock towers arranged at intervals in the left-right direction. The front cross beam 11 is connected to the front shock tower to improve the torsional resistance performance of the vehicle and the shock absorption effect of the vehicle.

[0046] For example, the triangular beam is an integrally cast part, and the U-shaped groove 3 opens upward or downward for mold release of the triangular beam. In the embodiment of the present application, the U-shaped grooves 3 of the front cross beam 11, the rear cross beam 12 and the longitudinal beam 21 are all arranged to open upward.

[0047] As Figure 1 and Figure 2 shown, the two longitudinal beams 21 are generally in an eight-character shape, and the distance between the rear ends of the two longitudinal beams 21 is less than the distance between the front ends of the two longitudinal beams 21. The inventor of the present application carried out topology optimization for the design sample with the smallest stiffness of the platform vehicle type and determined the layout structure of the two longitudinal beams 21. When the longitudinal beam 21 is arranged in the above structure, the torsional resistance performance of the front part of the vehicle can be improved, and the fatigue damage caused by vibration of the vehicle can be reduced.

[0048] In one example, as Figure 1 and Figure 2As shown, the front cross beam 11 includes a first front cross beam 111 and a second front cross beam 112, the second front cross beam 112 is arranged between the first front cross beam 111 and the rear cross beam 12, the front end of the longitudinal beam 21 is connected to the end of the first front cross beam 111, and the second front cross beam 112 passes through the two longitudinal beams 21 respectively along the left and right direction of the vehicle. It can be understood that in the direction from front to back of the triangular beam, the first front cross beam 111, the second front cross beam 112 and the rear cross beam 12 are arranged in sequence, and the first front cross beam 111, the second front cross beam 112 and the rear cross beam 12 all extend along the left and right direction of the vehicle. The front cross beam 11 of the triangular beam of the embodiment of the present invention adopts a double cross beam design, which can increase the lateral stiffness performance of the triangular beam, increase the first-order bending modal performance and the second-order bending modal performance of the triangular beam, so as to strengthen the stiffness and bending resistance of the triangular beam.

[0049] It is understandable that if Figure 2 and Figure 5 As shown in FIG. 1 , the inner peripheral contours of the longitudinal sections of the first front cross beam 111, the second front cross beam 112, the rear cross beam 12 and the longitudinal beam 21 are all U-shaped grooves 3. It can be understood that the longitudinal sections of the first front cross beam 111 and the second front cross beam 112 are U-shaped in a direction perpendicular to the left and right directions of the vehicle, and the longitudinal sections of the rear cross beam 12 and the longitudinal beam 21 are U-shaped in a direction perpendicular to the left and right directions of the vehicle.

[0050] The inventor of this application has concluded through simulation experiments that the lower surface of the triangular beam is basically retained as a complete structure, and the lower surface of the triangular beam is the key force transmission path. In order to meet the material molding quality requirements of the pressure casting process, the main injection channel of the casting structure is as continuous as possible. Combined with the topological optimization results, the cross-section of each beam is designed to be a continuous U-shape, and the lower surface and side of the U-shaped cross-section are assigned thickness with the minimum process practicable.

[0051] Optionally, such as Figure 4 As shown, the upper edge of the rear wall of the second front cross beam 112 has a first arcuate groove 1126 that is concave downward. The first arcuate groove 1126 extends along the length direction of the second front cross beam 112, and the outer peripheral contour of the first arcuate groove 1126 is arc-shaped and concave downward. For example, the structure of the first arcuate groove 1126 is generally bathtub-shaped, that is, the middle part of the first arcuate groove 1126 is concave, and the two ends of the first arcuate groove 1126 are flush with the height of the upper end surface of the longitudinal beam 21. The inventors of the present application have found through experimental research that when the upper edge of the rear wall of the second front cross beam 112 is set to the above structure, the bending stiffness of the second front cross beam 112 can be increased, the first-order mode of the second front cross beam 112 can be significantly improved, and the weight of the second front cross beam 112 can be reduced, which is conducive to the lightweight design of the triangular beam.

[0052] ​​In another embodiment, in the projection plane orthogonal to the front-rear direction of the vehicle, the contour line of the upper edge of the second front cross member 112 is a straight line, and the contour line of the lower edge of the second front cross member 112 is an upwardly convex arc. That is, the upper end of the second front cross member 112 adopts a straight design, and the lower end of the second front cross member 112 is an upwardly convex arched structure. In other words, in the projection plane orthogonal to the front-rear direction of the vehicle, the second front cross member 112 generally has an arched bridge structure. Thus, when the vehicle undergoes an offset collision, the deformation mode of the second cross member 112 is to bend upward, unloading part of the collision energy, so as to avoid the risk of the second cross member 112 breaking, and at the same time ensure that the second cross member 112 has a high stiffness and enhance the modal performance of the triangular beam.

[0053] Optionally, as Figure 1 , Figure 2 and Figure 5 shown, at least one first mount mounting position 1111 is provided on the first front cross member 111, and at least two second mount mounting positions 1121 are provided on the second front cross member 112. In the projection plane orthogonal to the front-rear direction of the vehicle, the first mount mounting position 1111 is provided between the two second mount mounting positions 1121. The first mount mounting position 1111 and the second mount mounting positions 1121 are used for mounting the compressor.

[0054] In one example, the first mount mounting position 1111 is one, the second mount mounting positions 1121 are two, and the connection lines of the three mount mounting positions are generally triangular, so as to improve the stability of the installation of the triangular beam and the compressor. For example, both the first mount mounting position 1111 and the second mount mounting positions 1121 are sleeve structures for passing through fastening bolts.

[0055] As Figure 1 , Figure 2 and Figure 5 shown, the cross member assembly 1 further includes a connecting beam 13. The front end of the connecting beam 13 is connected to the first front cross member 111, and the rear end of the connecting beam 13 is connected to the second mount mounting position 1121. It can be understood that the connecting beam 13 extends in the front-rear direction. The front end of the connecting beam 13 overlaps with the rear wall of the first front cross member 111, and the rear end of the connecting beam 13 overlaps with the second mount mounting position 1121. In other words, the second mount mounting position 1121 is provided at the connection position of the connecting beam 13 and the second front cross member 112, so as to enhance the translational mode and the flipping mode of the triangular beam and improve the dynamic stiffness and durability of the second mount mounting position 1121. In the embodiment of the application, there are two connecting beams 13, and the two connecting beams 13 are arranged at intervals in the left-right direction and correspond to the two second mount mounting positions 1121 one by one.

[0056] Optionally, the side wall thickness of the connecting beam 13 is greater than the bottom wall thickness of the connecting beam 13 to improve the bending resistance performance of the connecting beam 13. A hollow hole 131 is provided on the bottom wall of the connecting beam 13 to reduce the weight of the connecting beam 13, which is beneficial to the lightweight design of the triangular beam.

[0057] As Figure 1 and Figure 2 shown, the second mounting position 1121 of the mount is connected to the front wall of the second front cross beam 112 to enhance the dynamic stiffness and the front and rear translation modes of the second mounting position 1121 of the mount. A first reinforcing rib 1122 is provided on the second front cross beam 112. One end of the first reinforcing rib 1122 is connected to the second mounting position 1121 of the mount, and the other end of the first reinforcing rib 1122 is connected to the rear wall of the second front cross beam 112. It can be understood that the first reinforcing rib 1122 is arranged in the U-shaped groove 3 of the second front cross beam 112. The front end of the first reinforcing rib 1122 is connected to the second mounting position 1121 of the mount, and the rear end of the first reinforcing rib 1122 is connected to the rear wall of the second front cross beam 112 to enhance the second-order bending mode performance of the triangular beam.

[0058] As Figure 5 shown, in order to further improve the connection stiffness between the second mounting position 1121 of the mount and the second front cross beam 112, a triangular parallel rib 1128 is added at a position outside the second front cross beam 112 and adjacent to the second mounting position 1121 of the mount. The plane of the parallel rib 1128 is consistent with the mold parting surface during the drawing of the triangular beam to ensure the feasibility during the manufacturing of the triangular beam.

[0059] To improve the structural strength of the area of the first mounting position 1111 of the mount, the front wall of the first front cross beam 111 is thickened at a position adjacent to the first mounting position 1111 of the mount. In other words, the thickness of the front wall of the first front cross beam 111 at a position adjacent to the first mounting position 1111 of the mount is thicker than that of the front wall of the first front cross beam 111 at a position far from the first mounting position 1111 of the mount to improve the reliability of the connection between the first mounting position 1111 of the mount and the compressor, and the vibration damping effect is better.

[0060] For the longitudinal beam 21 between the second front cross beam 112 and the rear cross beam 12, the outer wall thickness of the longitudinal beam 21 is higher than the inner wall thickness of the longitudinal beam 21, so as to ensure both the bending resistance and collision performance of the overall triangular beam and reduce the weight of the triangular beam.

[0061] Optionally, as Figure 1 and Figure 2As shown, a second reinforcing rib 1123 is provided on the second front cross member 112. There is an angle between the extending direction of the second reinforcing rib 1123 and the extending direction of the second front cross member 112. The second reinforcing rib 1123 is connected to the longitudinal beam 21, the second mounting position 1121 of the suspension and the front and rear walls of the second front cross member 112. It can be understood that the second reinforcing rib 1123 extends obliquely in the left-right direction generally. One end of the second reinforcing rib 1123 is connected to the longitudinal beam 21, and the other end of the second reinforcing rib 1123 is connected to the rear wall of the second front cross member 112 after passing through the front wall of the second front cross member 112 and the second mounting position 1121 of the suspension. Thus, the local stiffness of the second front cross member 112 and the dynamic stiffness of the area of the second mounting position 1121 of the suspension can be enhanced, and at the same time, the second-order bending mode performance of the second front cross member 112 can be enhanced.

[0062] Optionally, as Figure 1 , Figure 2 and Figure 5 shown, a third reinforcing rib 1112 is provided on the first front cross member 111. There is an angle between the extending direction of the third reinforcing rib 1112 and the extending direction of the first front cross member 111. The third reinforcing rib 1112 is connected to the front and rear walls of the first front cross member 111 and the first mounting position 1111 of the suspension. It can be understood that the third reinforcing rib 1112 extends obliquely in the left-right direction generally. For example, there are two third reinforcing ribs 1112 and they are arranged on the left and right sides of the first mounting position 1111 of the suspension. In order to avoid the space layout of the compressor, there is a sudden change (become lower) in the area of the first mounting position 1111 of the first front cross member 111, and the structure becomes thinner. Therefore, it is necessary to set the third reinforcing rib 1112 at the position of the first mounting position 1111. For example, the thickness of the third reinforcing rib 1112 is 1.5 times the thickness of the same side or the base surface of the first front cross member 111. Also for example, the base surface of the area of the second mounting position 1121 is also thickened.

[0063] Optionally, as Figure 1 , Figure 2 and Figure 5 shown, a fourth reinforcing rib 211 is provided on the longitudinal beam 21. The fourth reinforcing rib 211 extends in the front-rear direction of the vehicle and is connected to the first front cross member 111, the second front cross member 112 and the longitudinal beam 21. It can be understood that the fourth reinforcing rib 211 penetrates through the longitudinal beam 21 in the front-rear direction, and the front end of the fourth reinforcing rib 211 is connected to the first front cross member 111, and the rear end of the fourth reinforcing rib 211 is connected to the second front cross member 112. For example, there are two fourth reinforcing ribs 211 and they are symmetrically arranged on the left and right sides of the front cross member 11 to increase the offset collision performance of the triangular beam.

[0064] Optionally, as Figure 2 and Figure 5As shown, a fifth reinforcing rib 1127 is provided inside the second front crossbeam 112. The fifth reinforcing rib 1127 is arranged adjacent to the end of the second front crossbeam 112. The fifth reinforcing rib 1127 is connected to the front wall of the second front crossbeam 112, the rear wall of the front crossbeam 11, and the outer wall of the longitudinal beam 21 and encloses a closed ring. For example, fifth reinforcing ribs 1127 are provided at both the left and right ends of the second front crossbeam 112, thereby improving the compressive capacity of the ends of the second front crossbeam 112.

[0065] Optionally, as Figure 1 and Figure 2 shown, first shock tower mounting positions 1113 are respectively provided at both ends of the first front crossbeam 111, and second shock tower mounting positions 1124 are respectively provided at both ends of the second front crossbeam 112. Both the first shock tower mounting positions 1113 and the second shock tower mounting positions 1124 are connected to the front shock tower. It can be understood that the first shock tower mounting position 1113 on the left side of the first front crossbeam 111 is connected to the front shock tower on the left side of the vehicle, and the first shock tower mounting position 1113 on the right side of the first front crossbeam 111 is connected to the front shock tower on the right side of the vehicle. Similarly, the second shock tower mounting position 1124 on the left side of the second front crossbeam 112 is connected to the front shock tower on the left side of the vehicle, and the second shock tower mounting position 1124 on the right side of the second front crossbeam 112 is connected to the front shock tower on the right side of the vehicle. The two first shock tower mounting positions 1113 are symmetrically arranged, and the two second shock tower mounting positions 1124 are symmetrically arranged, thereby further improving the shock absorption performance of the vehicle.

[0066] Optionally, as Figure 1 and Figure 2 shown, air filter mounting positions 1125 are provided at both ends of the second front crossbeam 112. It can be understood that the air filter mounting positions 1125 are used to mount the air filter, and the air filter mounting positions 1125 are closer to the ends of the second front crossbeam 112 than the second shock tower mounting positions 1124. For example, there are two air filter mounting positions 1125, one air filter mounting position 1125 is arranged on the left side of the second front crossbeam 112, and the other air filter mounting position 1125 is arranged on the right side of the second front crossbeam 112.

[0067] As Figure 7 shown, in order to ensure sufficient air inflow into the air filter and reduce the resistance of air inflow. For the longitudinal beam 21 between the second crossbeam 112 and the rear crossbeam 12, the upper end surface of the longitudinal beam 21 is recessed downward to form an air inlet area 214. Further, the upper edge of the inner wall of the longitudinal beam 21 is lower than the upper edge of the outer wall of the longitudinal beam 21 to meet the lightweight design of the triangular beam. When air flows into the air filter from the outside of the longitudinal beam 21, since the upper end surface of the longitudinal beam 21 is recessed downward to form the air inlet area 214, the smoothness of air circulation can be ensured, the air resistance can be reduced, and the filtering efficiency of the air filter can be improved.

[0068] Optionally, as Figure 1 and Figure 2 shown, there are multiple storage box mounting positions 1114 on the first front cross member 111. The multiple storage box mounting positions 1114 are arranged at intervals along the extending direction of the first front cross member 111, and the storage box mounting positions 1114 are connected to the front wall of the first front cross member 111. It can be understood that the storage box mounting positions 1114 are used to mount storage boxes. In one example, the multiple storage box mounting positions 1114 are evenly arranged on the first front cross member 111.

[0069] Optionally, as Figure 1 and Figure 2 shown, there are both a refrigeration comprehensive management system mounting position 113 and a coolant circuit integration module mounting position 114 on the first front cross member 111 and the second front cross member 112. The refrigeration comprehensive management system mounting position 113 is arranged adjacent to one end of the front cross member 11, and the coolant circuit integration module mounting position 114 is arranged adjacent to the other end of the front cross member 11. It can be understood that the refrigeration comprehensive management system mounting position 113 is arranged on the right side of the first front cross member 111 and the second front cross member 112, and the coolant circuit integration module mounting position 114 is arranged on the left side of the first front cross member 111 and the second front cross member 112.

[0070] For example, as Figure 1 and Figure 2 shown, there are two refrigeration comprehensive management system mounting positions 113. One refrigeration comprehensive management system mounting position 113 is arranged on the first front cross member 111, and the other refrigeration comprehensive management system mounting position 113 is arranged on the second front cross member 112, so that the refrigeration comprehensive management system can be fixed in the front - rear direction, which is beneficial to improving the stability of the installation of the refrigeration comprehensive management system.

[0071] For example, as Figure 1 and Figure 2 shown, there are four coolant circuit integration module mounting positions 114. Two coolant circuit integration module mounting positions 114 are arranged on the first front cross member 111, and the other two coolant circuit integration module mounting positions 114 are arranged on the second front cross member 112. The four coolant circuit integration module mounting positions 114 are used to fix the four corners of the coolant circuit integration module to improve the stability of the installation of the coolant circuit integration module.

[0072] In one example, as Figure 5As shown in the figure, there are multiple sixth reinforcing ribs 1115 provided inside the first front crossbeam 111. The multiple sixth reinforcing ribs 1115 are arranged in sequence along the extending direction of the first front crossbeam 111. There is an included angle between the sixth reinforcing rib 1115 and the extending direction of the first front crossbeam 111, and the upper edge of the sixth reinforcing rib 1115 has a downwardly concave second arc groove 11151. Among them, the second arc groove 11151 extends along the length direction of the sixth reinforcing rib 1115. The outer peripheral contour of the second arc groove 11151 is arc-shaped and concave downward, and the two ends of the second arc groove 11151 are flush with the upper end surface of the first front crossbeam 111. Through experimental research, the inventor of this application found that when the upper edge of the sixth reinforcing rib 1115 is set to the above structure, the bending stiffness of the first front crossbeam 111 can be increased, the first-order mode of the first front crossbeam 111 can be significantly improved, and the weight of the first front crossbeam 111 can be reduced, which is beneficial to the lightweight design of the triangular beam.

[0073] Optionally, as Figure 5 shown, the installation position 113 of the refrigeration integrated management system on the first front crossbeam 111 is a vertically extending sleeve structure. The rear side of the installation position 113 of the refrigeration integrated management system is connected to the rear wall of the first front crossbeam 111. The front side of the installation position 113 of the refrigeration integrated management system is open and connected to the sixth reinforcing rib 1115, so as to ensure the structural strength of the installation position 113 of the refrigeration integrated management system and reduce the weight of the installation position 113 of the refrigeration integrated management system.

[0074] In some embodiments, as Figure 1 、 Figure 2 and Figure 4 shown, there are multiple front wall panel installation positions 121 provided on the rear crossbeam 12. The multiple front wall panel installation positions 121 are arranged at intervals along the length direction of the rear crossbeam 12, and at least part of the front wall panel installation positions 121 are arranged staggeredly along the up and down direction of the rear crossbeam 12. It can be understood that at least part of the front wall panel installation positions 121 are not on the same straight line to improve the anti-torsion performance of the rear crossbeam 12.

[0075] Optionally, as Figure 2 and Figure 6 shown, the front wall panel installation position 121 includes two first front wall panel installation positions 1211 and at least one second front wall panel installation position 1212. The two first front wall panel installation positions 1211 are respectively arranged at both ends of the rear crossbeam 12 and are arranged adjacent to the outer wall of the longitudinal beam 21. The second front wall panel installation position 1212 is arranged between the two first front wall panel installation positions 1211. Since the first front wall panel installation position 1211 is arranged adjacent to the outer wall of the longitudinal beam 21, the span of the front wall panel installation position 121 in the left and right directions can be increased, so as to improve the anti-torsion performance after the triangular beam is installed with the front wall panel installation position 121.

[0076] For example, as Figure 2As shown, the number of the front wall panel mounting positions 121 is three. The second front wall panel mounting position 1212 at the middle position is higher than the first front wall panel mounting positions 1211 on both sides. For another example, as Figure 6 shown, the number of the front wall panel mounting positions 121 is four. The two second front wall panel mounting positions 1212 at the middle position are higher than the first front wall panel mounting positions 1211 on both sides. The front wall panel mounting positions 121 can be mounting structures such as studs and bolts, and are arranged through the front wall panel in the front-back direction.

[0077] It should be noted that for the same-platform vehicle models with large loads, in order to reduce the risk of the connection structure between the front wall panel mounting positions 121 and the front wall panel failing under large loads, the number of the front wall panel mounting positions 121 (studs) can be increased to reduce the load on a single front wall panel mounting position 121 (stud), and improve the durability of the connection of the front wall panel mounting positions 121. Of course, the number of the front wall panel mounting positions 121 also needs to meet the assembly requirements.

[0078] Optionally, as Figure 1 and Figure 2 shown, a plurality of HVAC system mounting positions 122 are provided on the rear cross member 12. The plurality of HVAC system mounting positions 122 are arranged at intervals along the extending direction of the rear cross member 12. A seventh reinforcing rib 123 arranged in a zigzag manner is provided on the rear cross member 12. The inner and outer walls of the longitudinal beam 21, the front and rear walls of the rear cross member 12, and at least part of the HVAC system mounting positions 122 are all connected to the seventh reinforcing rib 123. For example, part of the HVAC system mounting positions 122 are arranged at the connection position of the longitudinal beam 21 and the rear cross member 12, and the other part of the HVAC system mounting positions 122 are arranged at intervals at the middle position of the rear cross member 12. The seventh reinforcing rib 123 is a bent structure and is generally in an M shape, and sequentially connects the plurality of HVAC system mounting positions 122 in series. The end of the seventh reinforcing rib 123 is lapped with the outer wall of the longitudinal beam 21, so that the area of the HVAC system mounting positions 122 can be strengthened, and the connection strength between the longitudinal beam 21 and the rear cross member 12 can be improved.

[0079] In some embodiments, as Figure 1 and Figure 2 shown, a connection base surface 14 is provided at the connection position of the second front cross member 112 and the longitudinal beam 21. The connection base surface 14 is connected to the inner wall of the longitudinal beam 21 and the rear wall of the second front cross member 112. The thickness of the connection base surface 14 in the up-down direction of the vehicle is lower than the thickness of the bottom wall of any one of the second front cross member 112 and the longitudinal beam 21. In other words, there is no strengthening structure at the position of the connection base surface 14. Because the inventor found through simulation tests that adding a reinforcing rib here has no contribution to the stiffness, and increases the weight, which is not beneficial to the modal performance. For example, the connection base surface 14 is a triangular structure, or the edge of the connection base surface 14 can be arc-shaped.

[0080] As Figure 1 andFigure 2 As shown in the figure, a connecting rib 15 is provided at the connecting position of the second front cross beam 112 and the longitudinal beam 21. The connecting rib 15 includes a first connecting rib 151 and a second connecting rib 152. The first connecting rib 151 is connected to the outer wall of the longitudinal beam 21 and the rear wall of the second front cross beam 112, and the second connecting rib 152 is connected to the inner wall of the longitudinal beam 21 and the front wall of the second front cross beam 112. In other words, at the intersection position of the second front cross beam 112 and the longitudinal beam 21, the relatively arranged first connecting rib 151 and second connecting rib 152 are added, so as to reduce stress concentration and improve the strength and durability of the triangular beam. Among them, the connecting rib 15 can be an arc chamfer structure or a reinforcing rib structure.

[0081] Optionally, as Figure 5 shown in the figure, an eighth reinforcing rib 212 is provided inside the longitudinal beam 21. The eighth reinforcing rib 212 is connected to the outer wall and the inner wall of the longitudinal beam 21, and the front end of the eighth reinforcing rib 212 is connected to the connecting base surface 14, so as to further improve the anti-collision performance of the triangular beam. That is, when the second front cross beam 112 is subjected to a frontal collision, it can be transmitted to the eighth reinforcing rib 212 through the connecting base surface 14.

[0082] As Figure 5 shown in the figure, the connecting beam 13, the connecting base surface 14 and the eighth reinforcing rib 212 extend along the same straight line, so that the connecting beam 13, the connecting base surface 14 and the eighth reinforcing rib 212 penetrate the triangular beam in the front-rear direction to improve the collision performance of the triangular beam.

[0083] As Figure 5 shown in the figure, a ninth reinforcing rib 213 is provided inside the longitudinal beam 21. The front end of the ninth reinforcing rib 213 is connected to the outer wall of the longitudinal beam 21, and the rear end of the ninth reinforcing rib 213 is connected to the ninth reinforcing rib 213. It can be understood that when the second front cross beam 112 is subjected to a side collision, it can be transmitted to the eighth reinforcing rib 212 and the longitudinal beam 21 through the ninth reinforcing rib 213 to absorb and disperse energy, which is beneficial to improving the collision performance of the triangular beam.

[0084] Optionally, as Figure 2 and Figure 5 shown in the figure, a low-voltage wire harness installation position 1116 and a high-voltage wire harness installation position 1117 are provided on the front wall of the first front cross beam 111. Specifically, both the low-voltage wire harness installation position 1116 and the high-voltage wire harness installation position 1117 are through holes that penetrate the front wall of the first front cross beam 111 in the front-rear direction. For example, a plurality of low-voltage wire harness installation positions 1116 arranged at intervals in the left-right direction are provided on the front wall adjacent to the right side of the first front cross beam 111, and a plurality of high-voltage wire harness installation positions 1117 arranged at intervals in the left-right direction are provided on the front wall adjacent to the left side of the first front cross beam 111.

[0085] In some embodiments, as Figure 3As shown, in the front-to-rear direction of the triangular beam, the positions of the first front cross beam 111, the second front cross beam 112, and the rear cross beam 12 gradually rise, and the longitudinal beam 21 gradually extends obliquely upward. Taking the front-to-rear direction of the vehicle as X, the left-to-right direction of the vehicle as Y, and the up-and-down direction of the vehicle as Z. In the view along the Y direction, there are no protrusions or abrupt places in the height direction, and at the same X position, the heights of all the reinforcing ribs and beam systems are kept consistent.

[0086] The triangular beam of the embodiment of the present application adopts a modular design. The first shock tower mounting position 1113, the second shock tower mounting position 1124, the first mount mounting position 1111, and the second mount mounting position 1121 can all remain unchanged in different vehicle model designs. The Z-direction height and X-direction dimension of the front wall panel mounting position 121 are to meet the requirements of different types of vehicle models.

[0087] In other words, the triangular beam of the embodiment of the present application has a dedicated structure A and a shared structure B. In different vehicle model designs, the dimensional parameters of the shared structure B remain constant, and the dimensions of the dedicated structure A can be parametrically moved or rotated within the design range planned by the platform in the X and Z directions.

[0088] Among them, as Figure 3 shown, the rear cross beam 12 and the longitudinal beam 21 located between the second front cross beam 112 and the rear cross beam 12 (such as the triangular beam structure within the rectangular frame A in Figure 3 ) are the dedicated structure A. The first front cross beam 111, the second front cross beam 112, and the longitudinal beam 21 located between the first front cross beam 111 and the second front cross beam 112 (such as the triangular beam structure of the rectangular frame B in Figure 3 ) are the shared structure B. Thus, the triangular beam can be designed more efficiently, shortening the design cycle of the triangular beam, reducing the workload during design, and reducing problems such as performance risks.

[0089] For example, for sedans, the Z-direction height of the dedicated structure A is lower, and for SUV models, the Z-direction height of the dedicated structure A is higher. At the same time, the X-direction dimension of the dedicated structure A can also be adaptively adjusted to overlap and assemble with the vehicle body.

[0090] It can be understood that for the cast triangular beam of the embodiment of the present application, all the individually expected sides and the base surfaces of each region need to be thickness-matched. For example, thickening is carried out at the position near the gate and on the surface that is more sensitive to performance. A low-thickness design is carried out at the position far from the gate and on the surface that is not sensitive to performance.

[0091] On the main force transmission path of the triangular beam, each side should be kept as consistent as possible, reducing thickness variations, and avoiding the thickness at the position near the gate being greater than the thickness at the position far from the gate.

[0092] The cast triangular beam of the present application is a key component of the vehicle body. Its structural design can meet multiple performance requirements such as vehicle body stiffness, triangular beam mode, triangular beam dynamic stiffness, and triangular beam equivalent static load, and further improve the vehicle road noise and collision performance.

[0093] The inventors of the present application conduct a platform design for the triangular beam. On the one hand, it can reduce costs and achieve cross - model production, reducing special parts. On the other hand, it can shorten the development cycle of new models and accelerate the speed of new model introduction. Moreover, it can unify the quality standards. The platform has performance compatibility for the models developed using the platform, and its quality and reliability have been fully verified during the platform development stage.

[0094] The inventors of the present application obtained through experiments that for the first - order bending mode and flipping mode of the triangular beam, based on avoiding the noise resonance band near 120 Hz for road noise performance, the target is set to be ≥140 Hz. For the second - order bending mode of the triangular beam, based on avoiding the tire tread mode, the target is set to be ≥450 Hz.

[0095] The optimized target values of the bending stiffness and torsional stiffness of the vehicle body are both taken as the performance values of the reference vehicle or the target values of the self - developed platform. The target value of the collision equivalent static load bearing capacity is based on the bearing capacity of the base vehicle of the same - type platform that meets the performance requirements.

[0096] A vehicle according to another embodiment of the present invention includes a triangular beam and a vehicle body. The vehicle body includes a front wall panel and a front shock tower. The triangular beam is the triangular beam of the present invention. The front cross - beam 11 is connected to the front shock tower, and the rear cross - beam 12 is connected to the front wall panel.

[0097] In the vehicle according to the embodiment of the present invention, since the front cross - beam 11 is connected to the front shock tower of the vehicle, the rear cross - beam 12 is connected to the front wall panel of the vehicle, and the front and rear ends of the longitudinal beam 21 are respectively connected to the front cross - beam 11 and the rear cross - beam 12, energy can be absorbed when the front - part structure of the vehicle is collided, so as to reduce the deformation and intrusion amount of the passenger compartment. And since the two longitudinal beams 21 are arranged on the left and right sides of the cross - beam assembly 1, the torsional performance of the vehicle can be improved, and the fatigue damage caused by vehicle vibration can be reduced. On the other hand, since the inner - peripheral contour of the longitudinal section of at least one of the front cross - beam 11, the rear cross - beam 12, and the longitudinal beam 21 is a U - shaped groove 3, the bending resistance performance and vibration isolation ability of the triangular beam can be enhanced, which is beneficial to reducing the vibration amplitude of the triangular beam and further reducing the noise generated during vehicle driving.

[0098] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0099] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0100] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0102] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0103] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present invention.

Claims

1. A triangular beam, characterized in that: include: A crossbeam assembly, the crossbeam assembly comprising a front crossbeam and a rear crossbeam, the rear crossbeam being arranged at intervals on the rear side of the front crossbeam and being used to be connected to a front wall panel of a vehicle, and the front crossbeam being used to be connected to a front shock tower of the vehicle; Two longitudinal beams are respectively arranged on the left and right sides of the cross beam assembly, and in the direction from front to rear of the triangular beam, the two longitudinal beams extend obliquely along a trend of approaching each other, the front end of the longitudinal beam is connected to the front cross beam, and the rear end of the longitudinal beam is connected to the rear cross beam, and the inner peripheral contour of the longitudinal section of at least one of the front cross beam, the rear cross beam and the longitudinal beam is a U-shaped groove.

2. The triangular beam according to claim 1, characterized in that: The inner peripheral profiles of the longitudinal sections of the front cross beam, the rear cross beam and the longitudinal beam are all U-shaped grooves; And / or, the U-shaped groove opens toward at least one of an upper side of the triangular beam and a lower side of the triangular beam.

3. The triangular beam according to claim 1, characterized in that: The front cross beam includes a first front cross beam and a second front cross beam, the second front cross beam is arranged between the first front cross beam and the rear cross beam, the front end of the longitudinal beam is connected to the end of the first front cross beam, the second front cross beam passes through the two longitudinal beams respectively along the left and right directions of the vehicle, and the inner peripheral contours of the longitudinal sections of the first front cross beam, the second front cross beam, the rear cross beam and the longitudinal beam are all U-shaped grooves opening upward.

4. The triangular beam according to claim 3, characterized in that: The upper edge of the rear wall of the second front cross beam has a first arc-shaped groove which is recessed downward, and the first arc-shaped groove extends along the length direction of the second front cross beam.

5. The triangular beam according to claim 3, characterized in that: The crossbeam assembly also includes a connecting beam, a front end of the connecting beam is connected to the first front crossbeam, a rear end of the connecting beam is connected to the second front crossbeam, at least one first suspension mounting position is provided on the first front crossbeam, and at least two second suspension mounting positions are provided on the second front crossbeam, the second suspension mounting positions are provided at the connection position of the connecting beam and the second front crossbeam, and in a projection plane orthogonal to the front-to-rear direction of the triangular beam, the first suspension mounting position is provided between the two second suspension mounting positions.

6. The triangular beam according to claim 5, characterized in that: The thickness of the side wall of the connecting beam is greater than the thickness of the bottom wall of the connecting beam; And / or, a hollow hole is provided on the bottom wall of the connecting beam.

7. The triangular beam according to claim 5, characterized in that: The second suspension mounting position is connected to the front wall of the second front cross beam, the second front cross beam is provided with a first reinforcing rib, one end of the first reinforcing rib is connected to the second suspension mounting position, and the other end of the first reinforcing rib is connected to the rear wall of the second front cross beam; And / or, a second reinforcing rib is provided on the second front cross beam, an angle is formed between an extension direction of the second reinforcing rib and an extension direction of the second front cross beam, and the second reinforcing rib is connected to the longitudinal beam, the second suspension mounting position and the front and rear walls of the second front cross beam; And / or, a third reinforcing rib is provided on the first front cross beam, and an angle is formed between the third reinforcing rib and the extension direction of the first front cross beam. There are at least two third reinforcing ribs and they are arranged on the left and right sides of the first suspension mounting position, and the third reinforcing ribs are connected to the front and rear walls of the first front cross beam and the first suspension mounting position.

8. The triangular beam according to claim 3, characterized in that: The longitudinal beam is provided with a fourth reinforcing rib, the fourth reinforcing rib extending along the front-rear direction of the vehicle and connected to the first front cross beam, the second front cross beam and the longitudinal beam; And / or, a fifth reinforcing rib is provided in the second front cross beam, the fifth reinforcing rib is arranged adjacent to the end of the second front cross beam, the fifth reinforcing rib is connected to the front wall of the second front cross beam, the rear wall of the front cross beam and the outer wall of the longitudinal beam and forms a closed ring.

9. The triangular beam according to claim 3, characterized in that: A plurality of sixth reinforcing ribs are provided in the first front cross beam, and the plurality of sixth reinforcing ribs are arranged in sequence along the extension direction of the first front cross beam. An angle is formed between the sixth reinforcing ribs and the extension direction of the first front cross beam, and an upper edge of the sixth reinforcing ribs has a second arc-shaped groove recessed downward.

10. The triangular beam according to claim 9, characterized in that: A refrigeration integrated management system installation position is provided in the first front cross beam, and the refrigeration integrated management system installation position is a vertically extending sleeve structure. The rear side of the refrigeration integrated management system installation position is connected to the rear wall of the first front cross beam, and the front side of the refrigeration integrated management system installation position is open and connected to the sixth reinforcement rib.

11. The triangular beam according to claim 3, characterized in that: The rear cross beam is provided with a plurality of front wall panel mounting positions, which are arranged at intervals along the length direction of the rear cross beam, and at least some of the front wall panel mounting positions are arranged in a staggered manner along the up-down direction of the rear cross beam.

12. The triangular beam according to claim 11, characterized in that: The front wall panel mounting positions include two first front wall panel mounting positions and at least one second front wall panel mounting position. The two first front wall panel mounting positions are respectively arranged at the two ends of the rear cross beam and adjacent to the outer wall of the longitudinal beam, and the second front wall panel mounting position is arranged between the two first front wall panel mounting positions.

13. The triangular beam according to claim 12, characterized in that: The rear cross beam is provided with a plurality of HVAC system installation positions, which are arranged at intervals along the extension direction of the rear cross beam, and the rear cross beam is provided with a zigzag seventh reinforcement rib, and the inner and outer walls of the longitudinal beam, the front and rear walls of the rear cross beam and at least part of the HVAC system installation positions are all connected to the seventh reinforcement rib.

14. The triangular beam according to claim 3, characterized in that: A connecting base surface is provided at the connecting position of the second front cross beam and the longitudinal beam, and the connecting base surface is connected to the inner wall of the longitudinal beam and the rear wall of the second front cross beam. An eighth reinforcing rib is provided in the longitudinal beam, and the eighth reinforcing rib is connected to the outer wall and the inner wall of the longitudinal beam, and the front end of the eighth reinforcing rib is connected to the connecting base surface.

15. The triangular beam according to claim 14, characterized in that: A ninth reinforcing rib is provided in the longitudinal beam, a front end of the ninth reinforcing rib is connected to the outer wall of the longitudinal beam, and a rear end of the ninth reinforcing rib is connected to the ninth reinforcing rib; And / or, the cross beam assembly further comprises a connecting beam, a front end of the connecting beam is connected to the first front cross beam, a rear end of the connecting beam is connected to the second front cross beam, and the connecting beam, the connecting base surface and the eighth reinforcing rib extend along the same straight line; And / or, the thickness of the connecting base surface is not greater than the thickness of a bottom wall of any one of the second front cross beam and the longitudinal beam.

16. The triangular beam according to claim 3, characterized in that: In the direction from front to rear of the triangular beam, the positions of the first front cross beam, the second front cross beam and the rear cross beam gradually rise, and the longitudinal beam gradually extends upwardly.

17. The triangular beam according to claim 3, characterized in that: The rear cross beam and the longitudinal beam located between the second front cross beam and the rear cross beam are defined as dedicated structures, the first front cross beam, the second front cross beam and the longitudinal beam located between the first front cross beam and the second front cross beam are common structures, the dedicated structure is used to adjust the size according to different vehicle models, and the common structure is used to remain constant in different vehicle model designs.

18. A vehicle, characterized in that: include: A triangular beam, wherein the triangular beam is the triangular beam according to any one of claims 1 to 17; The vehicle body comprises a front wall plate and a front shock absorbing tower, the front cross beam is connected to the front shock absorbing tower, and the rear cross beam is connected to the front wall plate.

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