TWO-STAGE CYLINDRICAL VIBRATION ISOLATOR Russian patent published in 2018 - IPC F16F3/10 

FIELD: machine building.

SUBSTANCE: invention relates to the machine building. Vibration isolator is made in the form of connected in series identical upper and lower frames. Resilient damping element in the form of a cylindrical helical spring is coaxially placed in each frame, the coils of which are covered with polyurethane. Vibration-insulated object is fixed on a platform on an upper frame. Frames are made in the form of coaxially arranged rigid cylindrical shells with a radial clearance. Upper ends of the shells are rigidly connected to the disks, respectively. Upper ends of the resilient damping elements are fixed to an inner surface of the discs. Lower end of an upper resilient damping element is fixed on an outer surface of a disk of a lower frame. Lower end of a lower resilient damping element is fixed on a base. Lower cylindrical shell is connected to the base by means of vertical resilient elements in the form of cylindrical helical springs. Peripheral parts of the shells are connected by two horizontal elastic elements, comprising a body and an elastic member of an elastomer. Housing is made in the form of a square base, to which is attached a fixing element with a cylindrical sleeve by means of hollow rivets. Housing cover is made of coaxially connected by means of a circular partition of two cylindrical bushings. Resilient element is located between the base and the housing cover coaxially with the cylindrical bushings. Resilient element is located between the base and the housing cover coaxially with the cylindrical bushings.

EFFECT: enabling increase in the vibration isolation efficiency.

1 cl, 3 dwg