摘要
针对工程车辆在恶劣路况行驶时油气弹簧阻尼阀频繁受到冲击的特点,提出了研究阻尼阀水击压强的重要性。建立阻尼阀物理模型,并分析水击波在阀门附近的传递规律。运用特征线法求解水击偏微分方程组,推导油路的边界条件,成功将水击理论应用到小型液压件中,创建了完整的带有常通孔的阻尼阀水击数学模型。通过编程分析常通孔位置及结构参数对阻尼阀所受瞬时冲击的影响规律,得出常通孔应设置在阀门处,且结构尺寸越大,阀门所受水击振荡时间越少,水击力越小的结论,可以作为阻尼阀设计的参考。
The importance of studying damping valve water hammer pressure was presented because a damping valve with hydro-pneumatic spring was stroked frequently when a vehicle ran on off-road.The transferring rules of water hammer wave near a valve were analyzed after the physical model of a damping valve was built.The method of latent lines and the oil route boundary conditions were used to solve the partial differential equations of water hammer.The mathematic model of the whole damping valve with a throttle orifice was established after the theory of water hammer was applied to miniature hydraulic pressure devices successfully.The influencing rules of the throttle orifice position and the structural parameters on the damping valve reliability were studied.The analysis results showed that the throttle orifice should be set near the valve,and the larger the size of the throttle orifice,the less the oscillation time of water hammer,the smaller the water hammer pressure on the valve;these results can offer a reference for designing a damping valve.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第7期75-78,共4页
Journal of Vibration and Shock
基金
国家部委预研项目(51404040104BQ01)
关键词
油气弹簧
阻尼阀
水击
常通孔
hydro-pneumatic spring
damping valve
water hammer
throttle orifice
