Five-level gradual-type gas-liquid-solid coupling collision energy absorption device and application

Abstract

The invention provides a five-level gradual-type gas-liquid-solid coupling collision energy absorption device and application. A cylinder of the device is divided into a gas pressure chamber and a liquid pressure chamber through a first sealing piston and a second sealing piston. A choke block is arranged inside the liquid pressure chamber. A buffer spring and first columnar foamed aluminum are fixedly arranged on the side, away from the liquid pressure chamber, of the second sealing piston. The first columnar foamed aluminum is located inside a straight beam. The other end of the buffer spring stretches out of the straight beam and is fixed to a pressure bearing plate. Second columnar foamed aluminum linearly opposite to the first columnar foamed aluminum is arranged on the pressure bearing plate. The end, away from the pressure bearing plate, of the second columnar foamed aluminum stretches into the straight beam. Under the condition that the spring does not have elastic deformation, the first columnar foamed aluminum and the second columnar foamed aluminum are separated from each other. The sum of the linear length of the first columnar foamed aluminum and the linear length of the second columnar foamed aluminum is larger than the length of the straight beam. According to the five-level gradual-type gas-liquid-solid coupling collision energy absorption device, more energy is absorbed level by level, collision energy is absorbed and buffered step by step, and therefore the automobile collision safety performance is well improved.

Description

technical field [0001] The invention belongs to a vehicle device, in particular to a five-stage progressive gas-liquid-solid coupling collision energy-absorbing device and its application. Background technique [0002] With the rapid development of the automobile industry, the resulting traffic accidents have become a serious social problem. Automobile frontal collision accidents and the resulting casualties have always been the highest fatality rate among all collision forms. However, the pursuit of lightweight has become the mainstream of today's car design, so the front space of the current car is subject to a lot of compression, making it even more difficult to achieve better crash safety performance. Automobile bumper is an important part to maximize the safety of occupants in the event of a car collision. Its main components include a beam and an energy absorber connected between the beam and the mounting plate of the car body. The energy absorber is a component that...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a five-stage progressive gas-liquid-solid coupling collision energy-absorbing device and its application, aiming to solve the problems of poor energy-absorbing effect of existing energy-absorbing devices and inability to flexibly buffer collision energy.

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