| As a kind of safety equipments, buffer has been used widely in such project fields as the traffic, electricity, building and motive power machine, etc. With the development of equipments' giant and high-speed, hydraulic buffer which has an excellent performance is becoming more and more important. During the traditional designing, the main parameters are estimated based on experience then corrected relied on working performance. It is not an effective way to design and hard to get the satisfied results.To resolve this problem, further researches on LQY-YQ gas-hydraulic buffer is done. The gas-hydraulic buffer applies a new damping structure and utilizes the characteristic of nitrogen, such as no fatigue and small elastic modulus. It has a predominant capability and the power-absorption ability, including short rebound time and quick increasing of cushioning force.In this paper, a mathematical model of cushioning process based on LQH-YQ gas-hydraulic buffer is established, which can achieve some simulation curve after changed into simulation model by MATLAB and solved in computer. According to simulation results, which are confirmed by test's data, the influence of some parameters to the cushioning performance is discussed, and then, a conclusion that the damping valve parameters are the most important factors for cushioning is got. For a better cushioning performance of the buffer, choosing the diameter of damping valve, the length of damper and the advanced force and rigidity of springs as design variables, making the error between actual value and idealized value as an object function, and then, GA arithmetic is used as an optimized method. Finally, a series of proper data that can achieve well cushion performance, which shows steady force and high capacity, is got.Furthermore, a kind of software for optimization of the damping valve of gas-hydraulic buffer is developed, which provides good interfaces for showing the results. Its practical value is verified by a concrete instance. |
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