Rubber vibration isolator

FIELD: machine building.

SUBSTANCE: invention is related to machine building and may be used for vibration insulation of process equipment. Vibration isolator comprises body and elastic element from elastomer that interacts with object. Body is arranged in the form of upper conical cover and conical base, between which elastic element is installed. Elastic element is made of two symmetrical parts of conical shape: upper and lower, which are connected to each other by their surfaces having larger diametre, by means of elastic tape stitched with elastic thread. Opposite surfaces of elastic element are connected to fixing studs. Studs are installed coaxially and axisymmetrically to parts of elastic element of conical shape. Studs with their cylindrical part enter opening of elastic element, and collar is used with nut to pull it to conical base or cover.

EFFECT: increased efficiency of vibration insulation in resonant mode and simplification of design and installation.

2 cl, 1 dwg

 

The invention relates to mechanical engineering and can be used for isolation of process equipment, including devices and equipment.

The closest technical solution to the declared object is vibration absorber according to the author's certificate of the USSR No. 1594326, F16F 15/06 containing elastic element, one end of which rests on the housing, and the other interacts with the pendulum mechanism made in the form of an articulated suspension.

A disadvantage of the known device is the complexity of the hinged element and a lack of efficiency at resonance due to the lack of damping.

Technical result - increase the effectiveness of vibration isolation in a resonant mode and a simplified design and installation.

This is achieved by the fact that the rubber vibration damper, comprising a housing and an elastic element made of elastomer, interacting with an object, the body is made in the form of the upper conical cap and conical base, between which is located an elastic element made of two symmetrical parts of conical shape, the top and bottom, which are connected with their surfaces having a larger diameter by elastic tape sewing with elastic thread, and the opposite surface of the elastic element is connected with the mounting studs that location who are coaxially and asymmetrically parts of the elastic element conical shape, moreover, the mounting studs of its cylindrical part into the hole of the elastic element and the flange by nuts attracts him to the conical base or the lid.

The drawing shows a frontal section of the rubber insulator.

Rubber vibration absorber includes a housing made in the form of the upper conical cover 1 and the conical base 2, between which is located an elastic element made of two symmetrical parts of conical shape, the top 4 and bottom 3, which are connected with their surfaces having a larger diameter by elastic tape 11 sewing with elastic thread 12. The opposite surface of the elastic element is connected with the alignment pins 5 and 6, which are aligned and asymmetrically parts of the elastic element conical top 4 and bottom 3. Installation pin 5 of its cylindrical portion enters the opening in the elastic element 3 and the flange 10 by means of nuts 8 drawing him to the conical base 2. Mounting stud 6 of its cylindrical portion enters the opening in the elastic element 4 and the flange 9 by means of nuts 7 drawing him to the conical cover 1.

The ratio of the stiffness of the elastic element C1in the vertical direction to the rigidity of2elastic ribbon in horizontal is optimal with which the compared values: C 1/C2=1,4...2,0.

Rubber vibration absorber works as follows.

Fluctuations vibroisolating object that is installed on the stud 6, the elastic rubber element takes the vertical load, thus weakening the dynamic effects on the overlapping buildings or on Board an aircraft or mobile vehicles. Horizontal oscillations are damped due to unfettered location of the elastic element, which gives him a certain degree of freedom vibrations in the horizontal plane. The profile of the side surfaces of the elastic element conical allows to provide ravnopravnosti and efficiency of rubber (elastomer).

1. Rubber vibration absorber, comprising a housing and an elastic element made of elastomer, interacting with the object, wherein the body is made in the form of the upper conical cap and conical base, between which is located an elastic element made of two symmetrical parts conical top and bottom, which are connected with their surfaces having a larger diameter by elastic tape sewing with elastic thread, and the opposite surface of the elastic element is connected with the alignment pins, which are arranged coaxially and asymmetrically parts of the elastic element conical shape, etc is what the mounting studs of its cylindrical part into the hole of the elastic element and the flange by nuts draws him to the conical base or the lid.

2. Rubber vibration absorber according to claim 1, characterized in that the ratio of the stiffness of the elastic element C1in the vertical direction to the rigidity of2elastic ribbon in the horizontal is in the optimal ratio values: C1/C2=1,4...of 2.0.



 

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