Three-dimensional seism isolation system

The invention relates to a three-dimensional seism isolation system, which comprises preburied parts, first horizontal limit springs, a connecting plate, a horizontal slide bearing sliding plate, a horizontal slide bearing slider, upper slope leveling connecting plates, flush bolts, lead rubber bearings, second horizontal limit springs, lower slope leveling connecting plates and retaining blocks. Vertical seism is isolated by the deformation displacement of the inclined lead rubber bearings; horizontal seism is isolated by the sliding of the horizontal slide bearing slider; restoring force is supplied by the springs, and thereby the purpose of three-dimensional seism/vibration absorption is realized. The novel three-dimensional seism isolation system can protect protected objects of an upper building during horizontal and vertical vibration and seism and effectively attenuate the vibration transmission of vibrating equipment. The three-dimensional seism isolation system is applicable to the seism and vibration control and protection of building structures and large equipment.