This paper discusses the basic mechanical properties of a newly proposed parallel link mechanism as a three-dimensional seismic isolation system capable of supporting large loads. Specifically, the static restoring force characteristics of the entire mechanism, the moment caused by the spring force, and the inclination of the top surface due to 3-dimensional displacement were analyzed. The results show that stable static restoring force can be obtained by setting the initial angle within a certain range and using multiple units with a separation distance of 4 m or more between mechanisms.
