Abstract:
During the operation of hydraulic equipment, sudden increases in load can cause hydraulic shock due to step responses in the hydraulic system. Severe hydraulic shock can damage hydraulic components and reduce working efficiency. This article explains the various methods of shock suppression from four aspects as follows: power components, actuator elements, control elements, and auxiliary elements in hydraulic systems. Signal feedback is used in power components to reduce the pump speed during reversing operation, thereby reducing the output flow rate to achieve hydraulic shock suppression. Buffers are typically used in hydraulic cylinders for shock suppression, while research on the speed fluctuation of hydraulic motors is mainly used to solve pulsation problems, which can also have an effect on shock suppression. Research on control elements mainly focuses on the interaction of various valve components and the slowing down of hydraulic shock by increasing the response speed of valve components. Research on auxiliary elements mainly focuses on optimizing and designing the structure of accumulators, and introduces the application characteristics of biomimetic pipes and dampers for absorbing hydraulic shock. Finally, it is proposed that multidisciplinary innovation can be used to analyze and improve traditional hydraulic components to suppress hydraulic shock under extreme conditions such as high pressure and high flow rates.