Abstract: the hydraulic impact device of a large hydraulic equipment is designed, the functions and index requirements of the hydraulic impact device are introduced, the hydraulic impact device is designed, the typical components are calculated and selected, the hydraulic impact is calculated, the electro-pneumatic control system and measurement and control system are designed, and the human-computer interaction system based on HMI is designed, The results show that the hydraulic impact device can analyze and test the mechanism and performance parameters of hydraulic impact, which is of great significance to analyze the hydraulic impact function of large-scale hydraulic equipment and reduce the impact of hydraulic impact on the equipment.<br>Key words: large hydraulic equipment; Hydraulic shock; Unloading impact; Measurement and control system; performance testing <br>
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