Fender beam.
The anti-collision beam is a device used to reduce the absorption of collision energy when the vehicle is affected by a collision, which is composed of the main beam, the energy absorption box, and the installation plate connected to the car. The main beam and the energy absorption box can effectively absorb the collision energy when the vehicle encounters a low-speed collision, and minimize the damage of the impact force on the body longitudinal beam as much as possible, so as to play its protective role on the vehicle.
The two ends of the anti-collision beam are connected to the low-speed energy absorption box with very low yield strength, and then connected to the car body longitudinal beam through the form of bolts. The low-speed energy absorption box can effectively absorb the collision energy when the vehicle has a low-speed collision, and minimize the damage of the impact force on the body longitudinal beam as much as possible, so as to play its protective role on the vehicle.
The anti-collision beam structure should be able to ensure that the low-speed energy absorption box effectively absorbs the energy during low-speed impact through collapse, and the anti-collision beam is connected to the body by bolts, which is convenient for disassembly and replacement. Now many models are equipped with a layer of foam buffer on the anti-collision beam, its main role is in the collision below 4km/h, the external plastic bumper to play a support, alleviate the impact of collision force, reduce the impact of the damage to the plastic bumper, reduce maintenance costs.
The front and rear anti-collision beam is the device that the vehicle withstands the impact force for the first time, and an important concept in the passive safety of the body is that the whole body is stressed at one point. To put it bluntly, a certain position of the car body has been impacted, and if only this part is allowed to bear the force, the protection effect will be very poor. If the entire skeleton structure is subjected to force at a certain point, the strength of the force received by a point can be minimized, especially the front and back anti-collision steel beams play a very obvious role here.
Door beams These steel or aluminum components are installed inside the door and cannot be seen from the outside. Some are vertical, while others are diagonal, extending from the bottom door frame to the bottom edge of the window pane. Regardless of its specific location, the door crash beam is designed as an additional energy-absorbing protective layer that reduces the external forces that occupants may experience. As it turns out, the door anti-collision beam is very effective in protecting the vehicle from a fixed object (such as a tree).
The role of car anti-collision beam
The main function of the car anti-collision beam is to absorb and mitigate the external impact force when the vehicle crashes, protect the front and back of the body, and prevent the impact force from directly acting on the occupant cabin, thus protecting the safety of the passengers in the car. Here are the details:
Absorption of collision energy. The anti-collision beam is composed of the main beam, the energy absorption box and the mounting plate connected to the car, which can effectively absorb the collision energy when the vehicle crashes at low speed, and minimize the damage of the impact force on the body longitudinal beam.
Conducting impact force. The anti-collision steel beam can transmit the impact force to the rear connection parts, such as the longitudinal beam and the energy absorption box, so that they can withstand the main force, if the passenger compartment is not deformed, the door can be opened normally, the driver can escape, to ensure the safety of the car.
Protect the body structure. In a low-speed collision, the anti-collision steel beam itself bears the impact force, and then conducts this force to the energy absorption box, so that the energy absorption box is damaged first. If the impact capacity does not exceed a certain design value, the result may only damage the energy absorption box, the steel beam itself and the main body structure will not be damaged, so that the maintenance of the energy absorption box on the line, the maintenance cost is low.
A supporting role in a high-speed collision. In the high-speed front collision, the anti-collision steel beam helps to improve the protection, especially in the complex real environment collision; However, in the case of high-speed rear-end collision, the anti-collision beam is only a rigid object between the impactor and the body in the collision, which has little impact on the collision result.
In addition, the anti-collision steel beam is a U-shaped groove made of cold-rolled steel plate, which is connected with the longitudinal beam of the frame, as the first barrier of the passive safety of the car, and is an important safety device to absorb and mitigate the external impact force and protect the front and back of the body. Different types of anti-collision steel beams are different in material and structure, for example, the front anti-collision steel beam is connected to the longitudinal beam of the vehicle body, protecting the rear parts such as the water tank, and reducing losses in minor accidents; The rear anti-collision beam is generally thicker than the front beam, reducing the impact in small rear-end collisions, protecting the thin spare tire frame and the rear fender plate.
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