The structure of the cushion Kinetic energy principle anti-collision pad is generally composed of the end, energy absorbing material, both sides of the beam, diaphragm and back support. After a vehicle collides with the anti-collision pad, it absorbs the energy of the colliding vehicle through the deformation of the end part and energy absorbing material, and the back support is used to resist the impact force of the vehicle.
Energy absorbing material is generally foam material or rubber material, the principle of the anti-collision pad for the front and side of the vehicle has a good effect of energy absorption and guidance, and the system after the collision, the main components can be reused, convenient and fast maintenance and low cost, the disadvantage is a little more complex and high cost of the initial installation.
The principle of momentum conservation is generally composed of sand filling or water filling anti-collision cylinders (piers) of different masses arranged in a certain order. After a vehicle colliding with the anti-collision cushion, the momentum of the vehicle is transferred to the anti-collision cylinder in turn, which reduces the speed of the vehicle and the anti-collision cylinder in turn, and finally makes the speed of the vehicle lower than 15km/h.