作者根据工程实际由波动方程推演出联锁方程。并对经验公式予以修正。联锁方程不仅可以计算液压直接冲击值,而且可以计算间接冲击的相值,相时及相数。应用该方程解析液压传动中的非恒定流动的计算问题,取得了较为满意的结果。液压冲击联锁理论对铁路部门的液压传动与控制机械系统的设计提供了理论依据。 The author deduces the interlocking equation from the wave equation according to the actual project. And the empirical formula be amended. Interlocking equations can not only calculate the hydraulic direct impact value, but also calculate the indirect impact phase value, phase and phase number. Applying this equation to solve the problem of unsteady flow in hydraulic transmission has achieved satisfactory results. The theory of hydraulic impact interlocking provides theoretical basis for the design of hydraulic transmission and control mechanical system in railway department.