Patent RU-2651404-C1 (RU)
Inventor: Kochetov Oleg Savelevich
IPC: F16F15/08
Filed: 2017-08-04
Granted: 2018-04-19
Abstract: FIELD: machine building. 
     SUBSTANCE: invention relates to machine building and may be used for the processing equipment, including instruments and equipment vibration isolation. Rubber-metal vibration isolator is made in the form of a vibration isolator with parallel-connected resilient-damping elements containing a frame connecting two elastic elements of different design, but of equal rigidity, installed therein in parallel. Frame is made in the form of two supporting horizontal plates, resting against the left and right resilient damping elements, respectively. Frame horizontal plates are rigidly connected to the vertical plates, which in the frame lower part are connected together by the base plate, on which through the vibration damping gasket and a vertical post a platform for the vibration-insulated object is installed, wherein both resilient elements, the left and the right, are installed on the common base. Left resilient element is installed on a common base through the vibration damping gasket, and the right resilient element is through the vibration damping gasket, which is made identical to the vibration damping gasket fixed in its upper part and located under the frame horizontal supporting plate. Left resilient element is made in the form of an elastic damping element, which is a damper comprising body and piston arranged therein, body is made in the form of a 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. Between the collars a 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, and the 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. 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. Right resilient element is made in the form of the rubber vibration isolator containing a body and interacting with the object elastomeric resilient element, body is made in the form of a base, a lid with a collar, into which a pin with a conical girdle on the end is screwed in, having an increased hardness, which rests against a thrust washer with a cylindrical cup. Resilient element is made of a cylindrical shaped elastomer, in which lower part a cylindrical recess is made, forming a bridge, upon which the ring washer cylindrical cup is resting. In the upper part, the resilient element has a cylindrical shaped collar, wherein the pin is screwed in into the lid and fixing the vibration-insulated equipment on the thrust ring washer by means of a nut. Elastomer bridge thickness over the notch is 10…20 % of the resilient element height. 
     EFFECT: increase in the vibration isolation effectiveness due to the mesh elastic elements introduction into the vibration isolation system, damping oscillations in the middle and high frequencies. 
     1 cl, 3 dwg