Ultralow frequency vibration isolation device based on eddy current damping

The ultra-low frequency vibration isolation device comprises a base, a supporting column, a top plate and a rigidity adjusting mechanism, a left supporting plate and a right supporting plate are vertically installed on the left side and the right side of the top of the base respectively, the supporting column is vertically installed in the middle of the top of the base, and the top plate is installed on the tops of the left supporting plate and the supporting column; a rigidity adjusting mechanism is further installed between the top plate and the left supporting plate and the supporting column, a first amplifying mechanism is connected to the bottom of the top plate, a beam is vertically connected to the lower portion of the right supporting plate, a ball screw is installed between the beam and the base, an eddy current damping device is installed on the lower portion of the ball screw, and a connecting rod is installed on the right side of the top plate; and a push rod is vertically mounted at the other end