Three-dimensional rigidity-varying rubber vibration isolator

The utility model relates to a device for isolating and buffering equipment vibration, and relates to a three-dimensional rigidity-varying rubber vibration isolator. The three-dimensional rigidity-varying rubber vibration isolator comprises an inner shaft sleeve, an annular rubber body, an annular sleeve, an outer shell body, a packaging ring, a plurality of blots, a screw and a stop nut, wherein the inner shaft sleeve, the annular rubber body and the annular sleeve form an annular rubber assembly which is filled in the interior of the outer shell body, the top part of the annular rubber assembly is level with the top part of the outer shell body, the packaging ring is fixed on the top part of the outer shell body through the bolts, the screw at the top end of a flange type installation base which is fixedly connected with an engine passes through the inner shaft sleeve, the top end is higher than the inner shaft sleeve by a distance, the stop nut sleeves the top end of the screw and is higher than a threaded section of the inner shaft sleeve, and the stop nut is fixed by using a stop pin. The three-dimensional rigidity-varying rubber vibration isolator can be used for installing asymmetric equipment requiring multi-directional vibration reduction such as aero-engines and auxiliary power devices, and has the advantages of good vibration isolation effect, high installation reliability of power devices, high course rigidity and the like.