UNLOADED VIBRATION ISOLATOR OF LARGE CARRYING CAPACITY Russian patent published in 2014 - IPC F16F3/08 F16F1/362 

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry. Vibration isolator includes a housing with a rectangular flange, two elastic sleeves from wire material of metal rubber, which are arranged in it, a cover, a tightening element and fastening parts. A cylindrical wall of the housing projects on both sides of its base to the height of the sleeve in free state. A vibration isolator bottom is attached to the housing flange by screws. The tightening element is made in the form of a hollow cylinder with a round flange. A flat supporting platform with central and threaded holes is made on outer surface of the flange. The tightening element is arranged in central holes of elastic sleeves and the cover. Specified value of axial preload of elastic sleeves is created by tightening of a round nut that is screwed on a threaded end of the tightening element and under which elastic and lock washers are installed. An unloading spiral compression spring with high flexibility is arranged inside the slot of the tightening element. The spring is fixed along the round thread in a support made at the vibration isolator bottom. The cover is screwed from above onto the spring along round thread. Between the cover and the cylinder bottom there arranged is a support the ball stop of which is borne against the spring cover, and its outer surface is borne against the cylinder bottom of the tightening element.

EFFECT: achieving increase in carrying capacity and service life of a vibration isolator.

8 cl, 11 dwg