Research on the Support of Large Bearing Low-frequency Hard Vibration Isolation Equipment Based on Tilted Support Structure

According to the requirements of large load-bearing and low-frequency vibration isolation of nuclear power equipment and the special working environment in the nuclear island, a metal hard vibration isolation support structure with large load-bearing capacity is designed by using the geometric nonlinearity of typical tilted support structure. The deformation of the structure under rated load is obtained by numerical calculation, and the strength of the structure is verified. Based on the dynamic theory, a dynamic model is established, the vibration isolation effect is analyzed through the vibration level difference, the structural parameters are optimized, and the structural prototype is processed, and the vibration isolation effect of the structure is verified through the vibration reduction test of the real machine. The results show that the structure has good vibration isolation effect on the premise of ensuring the bearing capacity, which can provide a reference for the design of related vibration isolation structures.