Commercial vehicle aluminum alloy front lower portion protection device and vehicle

Abstract

The invention relates to a commercial vehicle aluminum alloy front underrun protection device and a vehicle. The commercial vehicle aluminum alloy front underrun protection device comprises an anti-collision cross beam. The supporting beam comprises a left supporting beam and a right supporting beam which are symmetrically arranged; the left supporting beam and the right supporting beam are arranged on the same side of the middle of the anti-collision beam in parallel. The inclined supporting beam comprises a left inclined supporting beam and a right inclined supporting beam which are symmetrically arranged; the left inclined supporting beam and the right inclined supporting beam are correspondingly arranged on the same side of the end part of the anti-collision cross beam and are correspondingly arranged on the outer sides of the left supporting beam and the right supporting beam; the connecting support comprises a left connecting support and a right connecting support which are symmetrically arranged; the left connecting support and the right connecting support are correspondingly arranged at the end parts of the left supporting beam and the right supporting beam; the two ends of the anti-collision cross beam, the left supporting beam, the right supporting beam, the left inclined supporting beam, the right inclined supporting beam, the left connecting support and the right connecting support are connected to form two closed triangular structures. While the protection requirement is met, the front protection weight is reduced to the maximum extent, and the light weight level of the whole vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicle safety protection, and particularly to an aluminum alloy front lower protection device for commercial vehicles and a vehicle. Background Art

[0002] Currently, the materials of the front lower protection devices of heavy commercial vehicles are mainly steel, which are formed by welding a collision avoidance cross beam and connecting plates, and are installed on the vehicle frame or front extension beam through the left and right connecting plates. In this technical solution, the connecting plates have a relatively long cantilever. During a collision, the left and right connecting plates bear a large torque, and their service life is relatively short. At the same time, since the material is mainly steel, the weight is too large, which is not conducive to the lightweight requirement of the whole vehicle. Summary of the Invention

[0003] The purpose of the present invention is to provide an aluminum alloy front lower protection device for commercial vehicles and a vehicle in view of the deficiencies of the prior art, and solve the problems in the prior art that the connecting plates have a relatively long cantilever, the left and right connecting plates bear a large torque during a collision, and their service life is relatively short. At the same time, since the material is mainly steel, the weight is too large, which is not conducive to the lightweight requirement of the whole vehicle.

[0004] The present invention is implemented by adopting the following technical solutions:

[0005] An aluminum alloy front lower protection device for commercial vehicles, the front lower protection device comprising:

[0006] A collision avoidance cross beam;

[0007] Support beams, including a left support beam and a right support beam symmetrically arranged; the left support beam and the right support beam are arranged in parallel on the same side of the middle part of the collision avoidance cross beam;

[0008] Diagonal support beams, including a left diagonal support beam and a right diagonal support beam symmetrically arranged; the left diagonal support beam and the right diagonal support beam are correspondingly arranged on the same side of the ends of the collision avoidance cross beam, and are correspondingly arranged outside the left support beam and the right support beam;

[0009] Connection supports; including a left connection support and a right connection support symmetrically arranged; the left connection support and the right connection support are correspondingly arranged at the ends of the left support beam and the right support beam;

[0010] Two closed triangular structures are formed by connecting between the two ends of the collision avoidance cross beam, the left support beam and the right support beam, the left diagonal support beam and the right diagonal support beam, and the left connection support and the right connection support.

[0011] As a further description of the invention, the middle part of the collision avoidance cross beam is a straight section, and the two ends are arc sections, and the cross section is in an "∞" shape.

[0012] As a further description of the invention, both the left support beam and the right support beam are arranged on the straight section of the collision avoidance cross beam and are located inside the arc sections of the collision avoidance cross beam, and the cross section is in a "day" shape.

[0013] As a further description of the invention, both the left diagonal bracing beam and the right diagonal bracing beam are arranged at the end of the arc section of the anti-collision cross beam, and the cross section is in the shape of a "mouth".

[0014] As a further description of the invention, both the left connecting support and the right connecting support include a bottom plate, a "U"-shaped groove plate connected to a support beam arranged on the bottom plate, a side plate connected to a diagonal bracing beam arranged on the bottom plate, and a plurality of reinforcing ribs arranged on both sides of the "U"-shaped groove plate on the bottom plate; a plurality of bolt holes are arranged on both sides of the "U"-shaped groove plate on the bottom plate.

[0015] As a further description of the invention, the anti-collision cross beam, the left support beam and the right support beam, the left diagonal bracing beam and the right diagonal bracing beam, and the left connecting support and the right connecting support are all made of aluminum alloy material;

[0016] The anti-collision cross beam, the left support beam and the right support beam, the left diagonal bracing beam and the right diagonal bracing beam, and the left connecting support and the right connecting support are welded and connected.

[0017] A vehicle includes a commercial vehicle aluminum alloy front lower protection device as described in any one of the above, and also includes a vehicle frame, a front extension beam and a lower cross beam; the front lower protection device is connected to the lower cross beam, the lower cross beam is connected to the front extension beam, and the front extension beam is connected to the left and right ventral surfaces of the vehicle frame to form a closed and fixed structure;

[0018] A closed rectangular structure is formed by connecting between the lower cross beam, the left connecting support and the right connecting support, the left support beam and the right support beam, and the middle of the anti-collision cross beam.

[0019] As a further description of the invention, the closed triangular structure and the closed rectangular structure are arranged on the same horizontal plane.

[0020] As a further description of the invention, the lower cross beam and the front extension beam are bolted, and each of the left connecting support and the right connecting support is bolted to the lower cross beam through bolts.

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

[0022] 1. In the front lower protection device of the invention, a closed rectangular structure is formed by connecting between the lower cross beam, the connecting support, the support beam and the middle of the anti-collision cross beam in the middle, and a closed triangular structure is formed by connecting between the diagonal bracing beam, the support beam, the connecting support and both ends of the anti-collision cross beam at both ends, and they are on the same horizontal plane, with reliable stiffness and strength, no eccentric moment generated during collision, reasonable force, meeting the protection requirements, and improving the reliability of the product.

[0023] 2. The anti-collision cross beam, the diagonal bracing beam, the support beam and the connecting support of the invention are all aluminum profiles, meeting the requirements of vehicle lightweight. Description of the Drawings

[0024] Figure 1 is a schematic structural view of the present invention;

[0025] Figure 2 is a front view of the front lower protection device of the present invention;

[0026] Figure 3 is a side view of the front lower protection device of the present invention;

[0027] Figure 4 is Figure 2 a sectional view taken along line A-A of

[0028] Figure 5 is Figure 2 a sectional view taken along line B-B of

[0029] Figure 6 is Figure 2 a sectional view taken along line B-C of

[0030] In the figure, 1. vehicle frame; 2. front extension beam; 3. lower cross beam; 4. front lower protection device; 5. left diagonal support beam; 6. left connection support; 7. left support beam; 8. anti-collision cross beam; 9. right support beam; 10. right connection support; 11. right diagonal support beam; 12. "U"-shaped groove plate; 13. side plate; 14. reinforcing rib; 15. bolt hole. Specific Embodiments

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Embodiment 1

[0033] As Figures 1-6 shown, this embodiment relates to a front lower protection device for a commercial vehicle made of aluminum alloy. The front lower protection device 4 includes:

[0034] an anti-collision cross beam 8;

[0035] support beams, including a left support beam 7 and a right support beam 9 symmetrically arranged; the left support beam 7 and the right support beam 9 are arranged in parallel on the same side of the middle part of the anti-collision cross beam 8;

[0036] diagonal support beams, including a left diagonal support beam 5 and a right diagonal support beam 11 symmetrically arranged; the left diagonal support beam 5 and the right diagonal support beam 11 are correspondingly arranged on the same side of the end part of the anti-collision cross beam 8, and are correspondingly arranged outside the left support beam 7 and the right support beam 9;

[0037] Connecting support; including a symmetrically arranged left connecting support 6 and a right connecting support 10; the left connecting support 6 and the right connecting support 10 are respectively arranged at the ends of the left support beam 7 and the right support beam 9;

[0038] In terms of overall structure, the two ends of the anti-collision beam 8, the left support beam 7 and the right support beam 9, the left diagonal support beam 5 and the right diagonal support beam 11, and the left connecting support 6 and the right connecting support 10 are connected to form two closed triangular structures.

[0039] The front lower protection device 4 is arranged horizontally as a whole, and the difference between the center of the anti-collision beam 8 and the center of the connecting support is within 0≤h≤50mm. In this embodiment, Figure 3 As shown, the difference between the center of the anti-collision beam 8 and the center of the connecting support is 0, and they are on the same horizontal line.

[0040] Among them, the anti-collision beam 8, the left support beam 7 and the right support beam 9, the left diagonal bracing beam 5 and the right diagonal bracing beam 11, the left connecting support 6 and the right connecting support 10 are all made of aluminum alloy materials; the anti-collision beam 8, the left support beam 7 and the right support beam 9, the left diagonal bracing beam 5 and the right diagonal bracing beam 11, the left connecting support 6 and the right connecting support 10 are welded and connected.

[0041] Specifically, if Figure 1 , 2 As shown in Figure 6, the left connecting support 6 and the right connecting support 10 both include: a bottom plate, a "U"-shaped groove plate 12 connected to the support beam is arranged on the bottom plate, a side plate 13 connected to the diagonal bracing beam is arranged on the bottom plate, a plurality of reinforcing ribs 14 are arranged on the bottom plate and on both sides of the "U"-shaped groove plate; a plurality of bolt holes 15 are arranged on the bottom plate and on both sides of the "U"-shaped groove plate; in this embodiment, the number of reinforcing ribs 14 on the bottom plate is four, and the number of bolt holes 15 is three.

[0042] like Figure 2 , 4 As shown, the anti-collision beam 8 has a straight line section in the middle and arc sections at both ends. The overall shape matches the shape of the lower part of the bumper. The cross section is "∞" shaped, and the tube wall can be of uniform thickness or non-uniform thickness.

[0043] like Figure 2 , 6 As shown, the left support beam 7 and the right support beam 9 are both arranged on the straight section of the anti-collision beam 8, and are located on the inner side of the arc section of the anti-collision beam 8. The cross-section is in the shape of a "日". The tube wall can be of equal thickness or of unequal thickness. One end is welded to the anti-collision beam 8, and the other end is embedded and connected to the "U"-shaped groove plate 12 of the above-mentioned connecting support.

[0044] like Figure 2 , 5As shown in , 6, the left diagonal bracing beam 5 and the right diagonal bracing beam 11 are both arranged at the end of the arc section of the anti-collision beam 8, and the cross-section is "口"-shaped. The tube wall can be of equal thickness or unequal thickness. One end is welded to the anti-collision beam 8, and the middle of the diagonal bracing beam is aligned with the middle reinforcement rib of the anti-collision beam 8, and the difference should be kept within 0≤h≤50mm. The other end is welded to the above-mentioned connecting support side plate 13, and there are two reinforcement ribs on both sides of the "U"-shaped groove plate 12, and the height is aligned with the upper and lower tube walls of the diagonal brace.

[0045] Embodiment 2

[0046] like Figures 1-6 As shown, this embodiment relates to a vehicle, including the above-mentioned commercial vehicle aluminum alloy front lower protection device, and also includes a frame 1, a front extension beam 2, and a lower cross beam 3; the front lower protection device 4 is connected to the lower cross beam 3, the lower cross beam 3 is connected to the front extension beam 2, and the front extension beam 2 is connected to the left and right belly surfaces of the frame 1 to form a closed fixed structure;

[0047] The lower cross beam 3, the left connecting support 6 and the right connecting support 10, the left supporting beam 7 and the right supporting beam 9, and the middle part of the anti-collision cross beam 8 are connected to form a closed rectangular structure.

[0048] The closed triangular structure and the closed rectangular structure are arranged on the same horizontal plane, and the reinforcement ribs of the anti-collision beam 8, the supporting beam tube wall, and the connecting support reinforcement ribs are at the same height. In the event of a collision, the force of the anti-collision beam 8 can be horizontally transmitted to the casting front extension beam 2 without eccentric bending moment, and the anti-collision beam 8 is better stressed;

[0049] The lower cross beam 3 is bolted to the front extension beam 2, and the left connecting support 6 and the right connecting support 10 are respectively bolted to the lower cross beam 3 through three bolts, so as to facilitate disassembly.

[0050] Description: According to the lightweight requirements of the whole vehicle and the characteristics of collision force, the ribs and wall thickness of the anti-collision beam, support beam, and diagonal brace beam are optimized according to their load-bearing size. The wall of the anti-collision beam adopts a non-uniform thickness "∞"-shaped section; the thickness of the support welding surface and the ribs is greater than the remaining wall thickness; the support beam adopts an equal thickness "日"-shaped section; the diagonal brace beam adopts an equal thickness "口"-shaped section. After simulation calculation and test verification, while meeting the protection requirements, the weight is reduced by ≥70% compared with other products in the industry.

[0051] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A front lower protection device for commercial vehicles made of aluminum alloy, characterized in that, The front lower protection device comprises: Anti-collision beam; The support beam comprises a left support beam and a right support beam which are symmetrically arranged; the left support beam and the right support beam are arranged in parallel on the same side of the middle of the anti-collision beam; The diagonal bracing beam comprises a left diagonal bracing beam and a right diagonal bracing beam which are symmetrically arranged; the left diagonal bracing beam and the right diagonal bracing beam are respectively arranged on the same side of the end of the anti-collision beam, and are respectively arranged on the outside of the left support beam and the right support beam; A connecting support; comprising a symmetrically arranged left connecting support and a right connecting support; the left connecting support and the right connecting support are respectively arranged at the ends of the left support beam and the right support beam; The two ends of the anti-collision beam, the left support beam and the right support beam, the left diagonal support beam and the right diagonal support beam, and the left connecting support and the right connecting support are connected to form two closed triangular structures.

2. The aluminum alloy front lower protection device for commercial vehicles according to claim 1, wherein The middle part of the anti-collision beam is a straight line segment, the two ends are arc segments, and the cross section is an "∞" shape.

3. The aluminum alloy front lower protection device for commercial vehicles according to claim 2, characterized in that, The left support beam and the right support beam are both arranged on the straight section of the anti-collision beam and are located on the inner side of the arc section of the anti-collision beam, and the cross section is a "sun" shape.

4. The aluminum alloy front lower protection device for commercial vehicles according to claim 3, characterized in that, The left diagonal bracing beam and the right diagonal bracing beam are both arranged at the ends of the arc section of the anti-collision cross beam, and the cross section is a "mouth" shape.

5. The aluminum alloy front lower protection device for commercial vehicles according to claim 4, wherein The left connecting support and the right connecting support each include a base plate, a "U"-shaped groove plate connected to a support beam arranged on the base plate, a side plate connected to a diagonal bracing beam arranged on the base plate, a plurality of reinforcing ribs arranged on the base plate and on both sides of the "U"-shaped groove plate; and a plurality of bolt holes arranged on the base plate and on both sides of the "U"-shaped groove plate.

6. The aluminum alloy front lower protection device for commercial vehicles according to claim 5, characterized in that, The anti-collision beam, the left support beam and the right support beam, the left diagonal support beam and the right diagonal support beam, the left connecting support and the right connecting support are all made of aluminum alloy; The anti-collision cross beam, the left support beam and the right support beam, the left diagonal support beam and the right diagonal support beam, and the left connecting support and the right connecting support are welded and connected.

7. A vehicle, characterized in that, The invention comprises the aluminum alloy front lower protection device for commercial vehicles as claimed in any one of claims 1 to 6, and further comprises a vehicle frame, a front extension beam and a lower cross beam; the front lower protection device is connected to the lower cross beam, the lower cross beam is connected to the front extension beam, and the front extension beam is connected to the left and right belly surfaces of the vehicle frame to form a closed fixed structure; The lower cross beam, the left connecting support, the right connecting support, the left supporting beam, the right supporting beam, and the middle part of the anti-collision cross beam are connected to form a closed rectangular structure.

8. The vehicle according to claim 7, wherein, The closed triangular structure and the closed rectangular structure are arranged on the same horizontal plane.

9. The vehicle according to claim 8, characterized in that, The lower cross beam is bolted to the front extension beam, and the left connecting support and the right connecting support are respectively connected to the lower cross beam by bolts.

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