Protective device for front lower part of long headstock

Abstract

The invention relates to a protective device for the front lower portion of a long vehicle head, which comprises an anti-collision cross beam, a diagonal bracing beam and supports, the supports comprise a left support and a right support, the left support and the right support are symmetrically arranged on the same side of the middle of the anti-collision cross beam, and reinforcing plates are arranged at the joints of the left support and the anti-collision cross beam and the right support and are triangular reinforcing plates. The arc edge of the triangular reinforcing plate is attached to the anti-collision cross beam, and the linear bottom edge of the triangular reinforcing plate is connected with the left support or the right support. Inclined supporting beams are arranged on the same side of the end part of the anti-collision cross beam, and the anti-collision cross beam is connected with a frame or a frame front end accessory through a bracket and the inclined supporting beams; a triangular stable structure is formed by the anti-collision cross beam, the inclined supporting beam and / or the front-end accessories of the frame, and when front collision occurs, stress is transmitted to the frame or the front-end accessories of the frame through the support. When oblique or lateral collision occurs, stress is transmitted to the frame or the frame front end accessory through the inclined supporting beam and the support together, stress is reasonable, and on the premise that the stable structure is met, safety of pedestrians and personnel in the vehicle is protected.

Description

Technical Field

[0001] This invention relates to the field of commercial vehicle safety protection technology, and in particular to a front underrun protection device for long vehicles. Background Technology

[0002] Commercial vehicles, especially heavy trucks, are mostly cab-over trucks, but long-nose trucks are gradually becoming a popular choice for drivers due to their fuel efficiency advantages from the streamlined front end and their wider field of vision.

[0003] The front underrun protection device is an important component for the collision safety of commercial vehicles. It can prevent small vehicles from being dragged into the lower front of the commercial vehicle in a collision. However, there are still shortcomings in the collision performance design of the front underrun protection devices for commercial vehicles. Most front underrun protection devices are just a piece of steel plate or hard plastic plate, which is simply processed and installed at the front of the commercial vehicle. This causes the front underrun protection device to be directly deformed and destroyed in a collision, and may even damage the frame or front accessories. At the same time, the energy absorption effect is poor, and it fails to effectively play its safety protection role. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a front underrun protection device for long vehicles. This device uses aluminum alloy reinforcing plates and aluminum anti-collision beams to buffer and absorb impact loads, protecting the safety of pedestrians and vehicle occupants while maintaining structural stability.

[0005] This invention is achieved using the following technical solution:

[0006] A front underrun protection device for a long vehicle includes a crossbeam, a diagonal brace, and a bracket. The bracket includes a left bracket and a right bracket, which are symmetrically arranged on the same side of the middle of the crossbeam. A reinforcing plate is provided at the connection between the left and right brackets and the crossbeam. The reinforcing plate is a triangular reinforcing plate, with its arc edge fitting against the crossbeam and its straight base edge connected to the left or right bracket. The diagonal brace is provided on the same side of the end of the crossbeam. The crossbeam is connected to the vehicle frame or a front end accessory of the vehicle frame through the bracket and the diagonal brace.

[0007] Furthermore, one end of the diagonal brace is provided with a connecting plate, which is connected to the anti-collision crossbeam, and the other end of the diagonal brace is provided with a diagonal brace mounting plate, which is connected to the vehicle frame.

[0008] Furthermore, the diagonal bracing beam includes a left diagonal bracing beam and a right diagonal bracing beam, which are symmetrically arranged on the same side of the end of the anti-collision crossbeam.

[0009] Furthermore, both the left and right supports are provided with circular weight-reducing holes.

[0010] Further, the diagonal bracing beam is rectangular.

[0011] Further, a number of reinforcing ribs are arranged in parallel within the reinforcing plate.

[0012] Further, both the reinforcing plate and the anti-collision cross beam are made of aluminum alloy.

[0013] Further, two layers of reinforcing partition plates are provided within the anti-collision cross beam, and the cross section of the anti-collision cross beam is in the shape of a Chinese character 'Mu' (eye).

[0014] Further, the middle part of the anti-collision cross beam is a straight section, and both ends are arc sections.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] 1. The anti-collision cross beam, the diagonal bracing beam and the vehicle frame or the front-end accessories of the vehicle frame form a triangular stable structure. When a frontal impact occurs, the force is transmitted to the vehicle frame or the front-end accessories of the vehicle frame through the bracket; when an oblique or lateral impact occurs, the force is jointly transmitted to the vehicle frame or the front-end accessories of the vehicle frame through the diagonal bracing beam and the bracket. The force is reasonable, and on the premise of meeting the stable structure, the safety of pedestrians and vehicle occupants is protected.

[0017] 2. The anti-collision cross beam and the reinforcing plate are made of aluminum alloy, meeting the requirements of vehicle lightweighting.

[0018] 3. The reinforcing plate is a triangular reinforcing plate, which is hollow inside and has a number of reinforcing ribs arranged in parallel. While meeting the lightweight design requirements, the structural hardness and stiffness are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the reinforcing plate in the present invention;

[0021] Figure 3 is a cross-sectional view of the anti-collision cross beam in the present invention.

[0022] REFERENCE NUMERALS IN THE DRAWINGS:

[0023] 1. Bracket; 11. Left bracket; 12. Right bracket; 2. Reinforcing plate; 21. Reinforcing rib; 3. Anti-collision cross beam; 4. Connecting plate; 5. Diagonal bracing beam; 51. Left diagonal bracing beam; 52. Right diagonal bracing beam; 6. Diagonal bracing beam mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0025] A front lower protection device for a long vehicle includes a crossbeam 3, a diagonal brace 5, and a bracket 1. The bracket 1 includes a left bracket 11 and a right bracket 12, which are symmetrically arranged on the same side of the middle of the crossbeam 3. A reinforcing plate 2 is provided at the connection between the left bracket 11 and the right bracket 12 and the crossbeam 3. The reinforcing plate 2 is a triangular reinforcing plate, with its arc edge fitting against the crossbeam 3 and its straight bottom edge connected to the left bracket 11 or the right bracket 12. A diagonal brace 5 is provided on the same side of the end of the crossbeam 3. The crossbeam 3 is connected to the vehicle frame or the front end accessory of the vehicle frame through the bracket 1 and the diagonal brace 5.

[0026] The anti-collision crossbeam 3, the diagonal bracing beam 5, and the vehicle frame or front-end accessory form a stable triangular structure. In the event of a frontal impact, the force is transferred to the vehicle frame or front-end accessory via the bracket 1. In the event of an oblique or lateral impact, the diagonal bracing beam 5 and the bracket 1 work together to transfer the force to the vehicle frame or front-end accessory. This reasonable force distribution, while meeting the requirements of a stable structure, protects the safety of pedestrians and vehicle occupants.

[0027] One end of the diagonal brace beam 5 is provided with a connecting plate 4, which is connected to the anti-collision crossbeam 3. The other end of the diagonal brace beam 5 is provided with a diagonal brace beam mounting plate 6, which is connected to the vehicle frame or the front end accessory of the vehicle frame.

[0028] The diagonal bracing beam 5 includes a left diagonal bracing beam 51 and a right diagonal bracing beam 52, which are symmetrically arranged on the same side at the ends of the anti-collision crossbeam 3.

[0029] Both the left bracket 11 and the right bracket 12 are provided with circular weight reduction holes. The circular weight reduction holes are provided to reduce the weight of the left bracket 11 and the right bracket 12, so as to meet the vehicle's lightweight design requirements.

[0030] The diagonal bracing beam 5 is rectangular.

[0031] The reinforcing plate 2 has several reinforcing ribs 21 arranged in parallel inside. The reinforcing plate 2 is a triangular reinforcing plate with a hollow interior and several reinforcing ribs 21 arranged in parallel inside, which meets the requirements of lightweight design while improving the structural rigidity and stiffness.

[0032] Both the reinforcing plate 2 and the anti-collision beam 3 are made of aluminum alloy, which meets the requirements for vehicle lightweighting.

[0033] There are two layers of reinforcing partitions inside the anti-collision beam 3, and the cross-section of the anti-collision beam is in the shape of a Chinese character "mu". The setting of the reinforcing partitions enhances the hardness and rigidity of the anti-collision beam 3.

[0034] The middle part of the anti-collision beam 3 is a straight section, and the two ends are arc sections.

Claims

1. A protective device for the lower front of a long vehicle, characterized in that, It includes a collision avoidance cross member (3), diagonal braces (5) and brackets (1). The bracket (1) includes a left bracket (11) and a right bracket (12). The left bracket (11) and the right bracket (12) are symmetrically arranged on the same side of the middle part of the collision avoidance cross member (3). A reinforcing plate (2) is provided at the connection between the left bracket (11) and the right bracket (12) and the collision avoidance cross member (3). The reinforcing plate (2) is a triangular reinforcing plate. The arc side of the triangular reinforcing plate is in contact with the collision avoidance cross member (3). The straight bottom edge of the triangular reinforcing plate is connected to the left bracket (11) or the right bracket (12). The diagonal braces (5) are provided on the same side of the end of the collision avoidance cross member (3). The collision avoidance cross member (3) is connected to the vehicle frame or the front-end accessories of the vehicle frame through the bracket (1) and the diagonal braces (5).

2. The front lower part protection device for long vehicle hoods according to claim 1, characterized in that, One end of the diagonal brace (5) is provided with a connecting plate (4), the connecting plate (4) is connected to the collision avoidance cross member (3), and the other end of the diagonal brace (5) is provided with a diagonal brace mounting plate (6), and the diagonal brace mounting plate (6) is connected to the vehicle frame or the front-end accessories of the vehicle frame.

3. The front lower part protection device for long vehicle hoods according to claim 2, characterized in that, The diagonal brace (5) includes a left diagonal brace (51) and a right diagonal brace (52). The left diagonal brace (51) and the right diagonal brace (52) are symmetrically arranged on the same side of the end of the collision avoidance cross member (3).

4. The front lower part protection device for long vehicle hoods according to claim 1, characterized in that, Both the left bracket (11) and the right bracket (12) are provided with circular weight reduction holes.

5. The front lower part protection device for long vehicle hoods according to claim 3, characterized in that, The diagonal brace (5) is rectangular.

6. The front lower part protection device for long vehicle hoods according to claim 1, characterized in that, A number of reinforcing ribs (21) are arranged in parallel in the reinforcing plate (2).

7. The front lower part protection device for long vehicle hoods according to claim 1, characterized in that, Both the reinforcing plate (2) and the collision avoidance cross member (3) are made of aluminum alloy material.

8. The front lower part protection device for long vehicle hoods according to claim 7, characterized in that, Two layers of reinforcing partitions are provided in the collision avoidance cross member (3), and the cross section of the collision avoidance cross member is in the shape of "eye".

9. The front lower part protection device for long vehicle hoods according to claim 8, characterized in that, The middle part of the collision avoidance cross member (3) is a straight segment, and both ends are arc segments.

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