New energy automobile anti-collision beam and machining method thereof

Abstract

The invention relates to the technical field of automobile anti-collision beams, in particular to a new energy automobile anti-collision beam and a machining method thereof. The license plate comprises a beam body, lamp holes are formed in the beam body in a penetrating mode and are symmetrically distributed, and a license plate groove is formed in the front end face of the beam body. The automobile anti-collision beam which is higher in strength and safer is adopted, the outer portion of the beam body of the anti-collision beam is made of the plastic material, the inner side of the beam body of the anti-collision beam is the double-layer metal plate, the anti-collision beam body is installed on the rear side of the beam body, and the anti-collision effect is effectively improved. The anti-collision beam body is made of metal, the spring is installed in the front end of the anti-collision beam body, the anti-collision beam body can effectively relieve collision, the reinforcing ribs for reinforcing strength are installed in the anti-collision beam body, the bearing strength is improved, the energy absorption boxes are installed on the two sides of the rear end of the anti-collision beam body, energy generated during collision is absorbed, and collision of the energy to a vehicle body is reduced. The cross supporting plates and the buffer layers are arranged in the energy absorption boxes, the absorption effect is effectively improved, and the overall anti-collision capacity of the anti-collision beam is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile anti-collision beams, and in particular to an anti-collision beam for a new energy vehicle and a processing method thereof. Background Art

[0002] With the rapid popularization of new energy vehicles, their anti-collision systems face technical bottlenecks that traditional fuel vehicles do not have. The chassis battery pack needs to avoid collision deformation (the national standard GB 38031-2020 requires that the battery pack must not catch fire or explode within 30 minutes after a collision). The insufficient energy absorption efficiency of traditional bumpers increases the risk of collision energy being transferred to the chassis. In addition, new energy vehicles need to reduce weight to improve their range, but high-strength steel beams increase weight significantly (accounting for 4%-7% of the total vehicle weight). Lightweight materials such as aluminum alloys lack strength. At the same time, sensing elements such as millimeter-wave radar and lidar are concentrated in the bumper area. The existing anti-collision beam structure squeezes installation space and is prone to damage high-value sensors in collisions.

[0003] Therefore, a new energy vehicle anti-collision beam and a processing method thereof are now developed in response to the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of existing devices, the present invention provides a new energy vehicle anti-collision beam and a processing method thereof.

[0005] The technical implementation scheme of the present invention is: a new energy vehicle anti-collision beam, including a beam body, the interior of the beam body is penetrated by lamp holes and is symmetrically distributed, the front end face of the beam body is provided with a license plate slot, the lower end of the beam body is provided with an air intake, the rear of the beam body is fixedly installed with an anti-collision beam main body, and energy absorption boxes are fixedly welded to both ends of the rear side of the anti-collision beam main body.

[0006] Optionally, a contact plate is fixedly welded to the front end surface of the anti-collision beam body, the material of the contact plate is metal, a spring is fixedly installed inside the anti-collision beam body, reinforcing ribs are embedded inside the anti-collision beam body, the anti-collision beam body is made of high-strength steel, and the anti-collision beam body is U-shaped.

[0007] Optionally, the outer layer of the beam body is a plastic layer, the inner layer of the beam body is a metal plate, the inner side of the metal plate is a high-strength plate, the material of the high-strength plate is aluminum alloy, and the plastic layer is made of engineering plastic, specifically: polypropylene PP.

[0008] Optionally, the metal plate and the high-strength plate are connected by welding, the metal plate is made of low-carbon steel, and the high-strength plate is made of aluminum alloy.

[0009] Optionally, one end of the energy absorption box is fixedly connected to the bearing plate, a cross support plate is fixedly installed inside the energy absorption box, and the energy absorption box is arranged in the shape of a square steel cylinder.

[0010] Optionally, a buffer layer is fixedly installed inside the energy absorption box, and the support plates are symmetrically installed on both sides of the buffer layer.

[0011] Optionally, the anti-collision beam body is fixedly installed through a bearing plate, and the beam body is installed on the front end of the anti-collision beam body through bolts.

[0012] A method for processing a new energy vehicle anti-collision beam comprises the following steps: S1. Use engineering plastics to form the external curved surface through mold injection, and simultaneously form the lamp hole, license plate slot and air intake; S2. Laser welding the metal plate and the high-strength plate to form a double-layer metal substrate, and stamping the double-layer metal substrate to match the contour of the plastic outer layer; S3, bonding the plastic outer layer and the metal composite layer through a hot pressing process to form an integrated beam body; S4. The U-shaped anti-collision beam body is formed by bending and stamping high-strength steel, with embedded longitudinal reinforcement ribs welded inside. A shock-absorbing spring assembly is fixed in the front cavity of the anti-collision beam body, with the spring pre-compression amount being 30% of the designed collision stroke. A metal contact plate is welded to the front surface of the anti-collision beam body as the beam body connection base; S5. The square steel cylinder of the energy absorption box is subjected to hydraulic bulging processing, a buffer layer is pre-installed inside, and X-shaped support plates are symmetrically laser-welded on both sides of the buffer layer to form an energy absorption structure; S6. The beam body is rigidly connected to the contact plate at the front end of the anti-collision beam body by bolts. At the same time, the energy absorption box is welded to the load-bearing plate and then welded to both sides of the rear end of the anti-collision beam body. After the energy absorption box is installed, it needs to be laser-calibrated to ensure that the coaxiality between the energy absorption box and the frame longitudinal beam is ≤0.5mm.

[0013] The present invention has the following advantages: The present invention adopts a method of making the outer part of the anti-collision beam body of plastic material and the inner part of double-layer metal plate, wherein one layer is a thinner high-strength metal plate and the other layer is a thicker low-strength metal plate, and an anti-collision beam body is installed on the rear side of the beam body, which effectively increases the anti-collision effect. The anti-collision beam body is made of high-strength steel, and a spring is installed inside the front end, which can effectively reduce the impact when a collision occurs. Reinforcement ribs for strengthening the strength are installed inside the anti-collision beam body to increase the bearing strength. Energy absorption boxes are installed on both sides of the rear end of the anti-collision beam body to absorb the energy generated during the collision and reduce the impact of the energy on the vehicle body. The interior of the energy absorption box is a cross support plate and a buffer layer, which effectively improves the absorption effect and increases the overall anti-collision ability of the anti-collision beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic cross-sectional structural diagram of the anti-collision beam body of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the beam body of the present invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0015] Description of reference numerals: 1. Beam body; 2. Lamp hole; 3. License plate slot; 4. Air intake; 5. Anti-collision beam body; 6. Energy absorption box; 7. Contact plate; 8. Spring; 9. Reinforcement rib; 10. Plastic layer; 11. Metal plate; 12. High-strength plate; 13. Load-bearing plate; 14. Support plate; 15. Buffer layer. DETAILED DESCRIPTION

[0016] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear herein are based solely on the accompanying drawings and are not intended to limit the present invention. Example 1

[0017] like Figure 1-4 As shown, a new energy vehicle anti-collision beam includes a beam body 1, the interior of the beam body 1 is provided with lamp holes 2 and are symmetrically distributed, the front end face of the beam body 1 is provided with a license plate slot 3, and the lower end of the beam body 1 is provided with an air inlet 4 to facilitate the flow of airflow for heat dissipation, an anti-collision beam main body 5 is fixedly installed at the rear of the beam body 1, and energy absorption boxes 6 are fixedly welded at both ends of the rear side of the anti-collision beam main body 5, which can better absorb the energy of the impact.

[0018] Furthermore, a contact plate 7 is fixedly welded to the front end face of the anti-collision beam main body 5. The material of the contact plate 7 is metal, which is convenient for contact support. A spring 8 is fixedly installed inside the anti-collision beam main body 5 to reduce the vibration and energy of the collision. Reinforcement ribs 9 are embedded in the interior of the anti-collision beam main body 5 to increase the bearing strength. The anti-collision beam main body 5 is made of high-strength steel, and the anti-collision beam main body 5 is U-shaped. The outer layer of the beam body 1 is a plastic layer 10, and the inner layer of the beam body 1 is a metal plate 11. The inner side of the metal plate 11 is a high-strength plate 12. The material of the high-strength plate 12 is aluminum alloy. The plastic layer 10 is made of engineering plastic, specifically: polypropylene PP. It also includes that the metal plate 11 and the high-strength plate 12 are welded. The metal plate 11 is made of low-carbon steel and the high-strength plate 12 is made of aluminum alloy to improve the overall bearing strength.

[0019] Furthermore, one end of the energy absorption box 6 is fixedly connected to the bearing plate 13, and a cross support plate 14 is fixedly installed inside the energy absorption box 6. The energy absorption box 6 is arranged in a square steel cylinder shape, and a buffer layer 15 is fixedly installed inside the energy absorption box 6. The support plates 14 are symmetrically installed on both sides of the buffer layer 15. The anti-collision beam main body 5 is fixedly installed through the bearing plate 13, and the beam body 1 is installed on the front end of the anti-collision beam main body 5 by bolts.

[0020] As can be seen from the above, the outer layer of the beam body 1 is a plastic layer 10, and the inner side is a metal plate 11 and a high-strength plate 12, which increase the strength of the beam body 1. The rear side of the beam body 1 is installed with an anti-collision beam main body 5. The material of the anti-collision beam main body 5 is high-strength steel. A spring 8 is installed inside the front end to absorb the energy generated during the collision. The interior of the anti-collision beam main body 5 is installed with reinforcing ribs 9 to increase the bearing strength and enable better anti-collision performance. Energy absorption boxes 6 are installed on both sides of the rear end of the anti-collision beam main body 5 to absorb the energy generated during the collision. Example 2

[0021] A method for processing a new energy vehicle anti-collision beam comprises the following steps: S1. Use engineering plastics to form the external curved surface through mold injection molding, and simultaneously form the lamp hole 2, license plate slot 3 and air intake 4; S2. The metal plate 11 and the high-strength plate 12 are laser welded to form a double-layer metal substrate, and the double-layer metal substrate is stamped to match the contour of the plastic outer layer; S3, bonding the plastic outer layer and the metal composite layer by a hot pressing process to form an integrated beam body 1; S4. Use high-strength steel to form a U-shaped anti-collision beam body 5 by bending and stamping. Weld longitudinal reinforcing ribs 9 inside. Secure a set of shock-absorbing springs 8 within the front end cavity of the anti-collision beam body 5. Pre-compression of the springs 8 is 30% of the designed collision travel. Weld a metal contact plate 7 to the front end of the anti-collision beam body 5 to serve as a connection base for the beam body 1. S5. The square steel cylinder of the energy absorption box 6 is subjected to hydraulic bulging processing, a buffer layer 15 is pre-installed inside, and X-shaped support plates 14 are symmetrically laser-welded on both sides of the buffer layer 15 to form an energy absorption structure; S6. The beam body 1 is rigidly connected to the contact plate 7 at the front end of the anti-collision beam body 5 by bolts. At the same time, the energy absorption box 6 is welded to the load-bearing plate 13 and then welded to both sides of the rear end of the anti-collision beam body 5. After the energy absorption box 6 is installed, laser calibration is required to ensure that the coaxiality of the energy absorption box 6 and the frame longitudinal beam is ≤0.5mm.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A new energy vehicle anti-collision beam, comprising a beam body (1), characterized in that: The interior of the beam body (1) is provided with lamp holes (2) which are symmetrically distributed, the front end of the beam body (1) is provided with a license plate slot (3), the lower end of the beam body (1) is provided with an air inlet (4), an anti-collision beam body (5) is fixedly mounted at the rear of the beam body (1), and energy absorption boxes (6) are fixedly welded to both ends of the rear side of the anti-collision beam body (5).

2. The anti-collision beam for new energy vehicles according to claim 1, characterized in that: A contact plate (7) is fixedly welded to the front end surface of the anti-collision beam body (5), and the material of the contact plate (7) is a metal material. A spring (8) is fixedly installed inside the anti-collision beam body (5), and a reinforcing rib (9) is embedded inside the anti-collision beam body (5). The anti-collision beam body (5) is made of high-strength steel, and the anti-collision beam body (5) is U-shaped.

3. The anti-collision beam for new energy vehicles according to claim 1, characterized in that: The outer layer of the beam body (1) is a plastic layer (10), the inner layer of the beam body (1) is a metal plate (11), the inner side of the metal plate (11) is a high-strength plate (12), the material of the high-strength plate (12) is an aluminum alloy material, and the plastic layer (10) is made of engineering plastic, specifically polypropylene (PP).

4. The anti-collision beam for new energy vehicles according to claim 3, characterized in that: The metal plate (11) and the high-strength plate (12) are connected by welding; the metal plate (11) is made of low-carbon steel, and the high-strength plate (12) is made of aluminum alloy.

5. The anti-collision beam for new energy vehicles according to claim 1, characterized in that: One end of the energy absorption box (6) is fixedly connected to the bearing plate (13), and a cross support plate (14) is fixedly installed inside the energy absorption box (6). The energy absorption box (6) is arranged in a square steel cylinder shape.

6. The anti-collision beam for new energy vehicles according to claim 4, characterized in that: A buffer layer (15) is fixedly installed inside the energy absorption box (6), and the support plates (14) are symmetrically installed on both sides of the buffer layer (15).

7. The anti-collision beam for new energy vehicles according to claim 1, characterized in that: The anti-collision beam main body (5) is fixedly installed via a bearing plate (13), and the beam body (1) is installed on the front end of the anti-collision beam main body (5) via bolts.

8. A method for processing an anti-collision beam for a new energy vehicle, applied to the anti-collision beam for a new energy vehicle according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, using engineering plastics to form an external curved surface through mold injection molding, and simultaneously forming a lamp hole (2), a license plate slot (3) and an air intake (4); S2, laser welding the metal plate (11) and the high-strength plate (12) to form a double-layer metal substrate, and stamping the double-layer metal substrate to match the contour of the plastic outer layer; S3, bonding the plastic outer layer (10) and the metal composite layer by a hot pressing process to form an integrated beam body (1); S4. A U-shaped anti-collision beam body (5) is formed by bending and stamping high-strength steel, and longitudinal reinforcing ribs (9) are embedded and welded inside. A shock-absorbing spring (8) group is fixed in the front end cavity of the anti-collision beam body (5), and the pre-compression amount of the spring (8) is 30% of the designed collision stroke. A metal contact plate (7) is welded on the front end surface of the anti-collision beam body (5) as a connection base of the beam body (1); S5, the square steel cylinder of the energy absorption box (6) is subjected to hydraulic expansion processing, a buffer layer (15) is pre-installed inside, and X-shaped support plates (14) are symmetrically laser-welded on both sides of the buffer layer (15) to form an energy absorption structure; S6, the beam body (1) is rigidly connected to the contact plate (7) at the front end of the anti-collision beam body (5) (5) by bolts. At the same time, the energy absorption box (6) is welded to the bearing plate (13) and then welded to both sides of the rear end of the anti-collision beam body (5) (5). After the energy absorption box (6) is installed, it needs to be laser calibrated to ensure that the coaxiality of the energy absorption box (6) and the frame longitudinal beam is ≤0.5mm.

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