FIELD: machine building.
SUBSTANCE: invention relates to machine building. Vibration isolator contains an elastic element fixed to the base, which perceives eccentric loading, and a cover with holes. System for adjusting the rigidity of the elastic element is made in the form of a flexible connection, one end of which is intended to be fixed to the object, and the other passes through the holes on the cover and is fixed to the base. Elastic element is made in the form of a vibration damping spring comprising a housing made of a helical hollow elastic steel tube. Additional resilient steel tube is installed inside the casing coaxially with a gap. In the gaps between the tubes there is a friction element having a high coefficient of thermal expansion in comparison with steel. Surfaces of the casing and the additional resilient steel tube touch the surfaces of the friction elements. Screw solid resilient pin is set coaxially to the casing. Friction element is made in the form of a granular fill made of sintered copper-based friction material.
EFFECT: increased efficiency of vibration isolation in resonance mode is being achieved.
4 cl, 4 dwg
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