TWO-STEP HINGED TYPE VIBRATION ISOLATOR FOR THE UNBALANCED EQUIPMENT Russian patent published in 2018 - IPC F16F15/06 F16F15/08 F16F3/10 F16F9/30 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and may be used for the processing equipment, including weaving looms vibration isolation. Two-stage hinged type vibration isolator for unbalanced equipment, made in the form of a two-stage frame consisting of successively connected and identical frames: the upper and the lower frames, with, respectively, upper and lower resilient damping elements, coaxially placed in them, upper and lower frames are made in the form of coaxially arranged truncated cone rigid shells: the upper and lower, at that, each of shells upper base is a connected to them rigid disk, in each of which the upper and lower resilient-damping elements, respectively, rest against by the upper ends. Each of the truncated cone shells lower base is made open and intended for installation of at least two inclined resilient elements, as well as at least two connected to the base vertical resilient elements, at that, the inclined resilient elements are located in the truncated cone shells peripheral part. Vertical resilient elements are connected to the truncated cone lower shell lower end part by their upper ends, and by the lower ends is to the base, at that, the resilient elements are installed in planes with a shift of 90°. Upper resilient-damping element is made in the form of a cylindrical helical spring, which turns are covered with a vibration damping material, for example, polyurethane. Lower elastic-damping is made in the form of a vibration-damping gasket rigidly connected to the damper comprising a body and a piston arranged therein, the body is made in form of the cylinder with a bottom, in which a piston is arranged made in the form of cup with parallel to each other and coaxial to the body top and bottom collars, which are located relative to the body inner surface with a gap, and between the collars friction material is located. Spring located between the piston and the body bottom rests against the piston lower surface, wherein the cavity between the piston and the body bottom, in which the spring is located is filled with a friction material with a higher friction coefficient. Piston upper collar upper surface rests against the elastic ring connected to the locking member made, for example, in the form of a locking ring fixed in the groove of the body cylinder inner surface, at that, through the resilient ring the locking element contacts the piston upper collar upper surface, holding it in its original state, and as the located between the piston collars friction material, a sintered friction material based on copper containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon is used. Located between the piston and the body bottom spring is made in the form of a conical spring, which turns are covered with a vibration damping material, for example, polyurethane.

EFFECT: increase in the vibration isolation effectiveness.

3 cl, 1 dwg