What is the function of the anti-collision beam?
3 Answers
The function of the anti-collision beam is to absorb and mitigate external impact forces or to protect the front and rear parts of the vehicle body. The anti-collision beam is a U-shaped channel formed by stamping cold-rolled steel plates and is connected to the longitudinal beams of the vehicle frame, serving as the first barrier of passive safety in automobiles. Anti-collision beams are divided into front and rear anti-collision beams. Below is an introduction to the related content: 1. The front anti-collision beam is usually connected to the longitudinal beams of the vehicle body, protecting rear components such as the radiator and reducing damage in minor accidents. The materials are generally steel, fiberglass, or aluminum alloy, with a thickness of 1.5-3mm. In fact, there is usually a layer of foam supporting the outer plastic skin of the front anti-collision beam, primarily serving to protect pedestrians. 2. The rear anti-collision beam is generally thicker than the front beam, around 2-3mm. It is connected to the longitudinal beams under the vehicle chassis, aiming to reduce impact in minor rear-end collisions and protect the thin spare tire rack and rear fenders, among other parts. Without a rear anti-collision beam, even a minor rear-end collision could cause the plastic skin to fail to withstand any impact.
The anti-collision steel beam is located at the front and rear of the car, and I think of it as a hidden guardian. Last time I was stuck in traffic in the city and rear-ended the car in front of me, the speed wasn't high but the impact was quite strong. Fortunately, the anti-collision steel beam absorbed the shock, leaving the car body largely undeformed and the internal components intact. Its main role is to act as a buffer, dispersing the energy from a collision to prevent it from being directly transmitted to the frame. This way, it protects critical components like the engine or transmission in low-speed accidents. Without this steel beam, even a minor collision could cause significant damage to the entire frame, leading to repair costs that can easily run into thousands. Additionally, in high-speed accidents, it works in tandem with airbags and the car's skeleton to reduce the risk of passenger injuries. I recommend drivers check the steel beam for rust or deformation during maintenance to ensure it functions effectively when needed—this can save a lot of money and enhance safety. Don’t underestimate it; it really comes through in critical moments.
From a safety perspective, the anti-collision beam is crucial. Every time I drive with my children, I pay extra attention to the vehicle's body protection. This steel beam is installed at the front and rear of the car, acting as a flexible barrier. In the event of a collision, it deforms first to absorb the impact force and then gradually releases the energy, preventing sudden massive forces from directly transmitting into the cabin and harming the family. For example, if the car is bumped from behind in a parking lot, the beam will bend but the car body remains almost undamaged, significantly reducing repair costs. It also protects the chassis and suspension system, extending the vehicle's lifespan. I've seen cases where the beams of older cars were rusted and failed during accidents, doubling the repair expenses. I recommend that car owners regularly have their beams inspected by a mechanic and use high-pressure water to remove dirt and prevent corrosion. Safety is no trivial matter—this small component can be a lifesaver in critical moments.
