| As a safety component between mechanical devices,shock absorbers can effectively reduce the vibration impact and collision of mechanical devices during work;stabilize mechanical actions,increase production efficiency,and increase machine life.However,with the rapid development of modern industry,the control accuracy of the movement of mechanical equipment is getting higher and higher.Therefore,it is necessary to study buffers with high buffer efficiency and high reliability to meet strict requirements.In this paper,the porous small hydraulic buffer is taken as the research object,which is characterized by the orifices on the cylinder wall being distributed with unequal apertures and unequal spacing;the structure is compact,the reset time is short,and the buffer performance is ideal.First,based on the structure and working principle of the hydraulic buffer,a mathematical model of the buffer process is established on the basis of hydraulic fluid mechanics and kinematics.Through the method of numerical simulation,the buffering process is analyzed to obtain the relevant curve reflecting the buffering performance,and the correctness of the mathematical model and numerical simulation is verified by using Amesim simulation software,and the impact rules of impact conditions and structural characteristics on the buffering characteristics are summarized.It is proved that the orifice parameter is the key structure of the hydraulic buffer.Secondly,in order to further improve the buffer efficiency of the hydraulic buffer,the genetie:algorithm is used to optimize the design of the orifice parameters,and the optimal combination parameters are obtained through the optimization iteration.The optimized buffer efficiency of the hydraulic buffer is increased by about 23%.The peak value of the cushioning force is reduced by half,the cushioning performance is improved,and the cushioning process is more stable.Finally,the static performance experimental study of the hydraulic buffer was carried out,and the experimental results were consistent with the simulation results,and the specific implementation scheme of the dynamic performance experiment was designedThrough the above research and analysis,it shows that the thesis is feasible to optimize and optimize the hydraulic buffer.It provides specifie methods for improving the buffering performance of hydraulic buffers,and has certain research value and application prospects. |
