SU1236223A1 - Vibration isolator - Google Patents

Description

12

The invention relates to mechanical engineering and is intended to reduce the magnitude of the spatial dynamic loads on a vibroisolating object, for example, on a unit of radioelectronic equipment.

The aim of the invention is to improve the quality of vibration isolation in the presence of transverse components of the load by increasing friction.

FIG. 1 shows the proposed vibration isolator in FIG. 2 is a section A-A in FIG. 1.

The device comprises a housing 1, a fastening element 2, a coil 3 connected to the housing 1 by means of conical springs 4 and 5, a core 6 made in the form of a bush with wild booms 7 and 8 and the clips 9 and 10 associated with it, and 12 and the spring ring 13 with a slit 14, the elastic elements 15 and 16, the large bases of which abut the coil 3, and the smaller bases and the disks 7 and 8 of the surfaces of the clips 9 and 10, against which the ring 13 abuts, are made in the form of an annular groove 17 whose cross section forms a smooth curve, symmetrical with respect to the generator of the ring 13. Elastic elements You are 15 and 16 set symmetrically. The springs 11 and 12 are cup-shaped ..

Vibration isolator works as follows.

When exposed to the axis of the vibration isolator, coil 3 is able to move relative to 23J

but the rings 13 with definite friction, while the elastic elements 13 and 16 create an elastic force by the coil 3 and the disk: 7 and 8 of the core 6, restoring their mutual position. As the displacement of the coil 3 increases relative to the ring 13, it contacts the holder 9 or 10. At the same time, the disc springs 11 and 12 are engaged in parallel operation with the elastic elements 15 and 16, causing additional energy absorption. When the deformation of the springs 11 and 12, in addition, create additional energy dissipation due to slippage with friction of their bases on the surface of the disks 7 and B.

When exposed perpendicularly to the vibration isolator, the ring 13 moves with friction relative to the surfaces of the collars 9 and 10, while the elastic elements 15 and 16 create an elastic force that restores the position of the ring 13 and the coil 3 relative to the core 6. The collars 9 and 10, in this case, they move in the axial direction, having carried out uniform deformation of the springs 11 and 12.

Due to this, additional energy absorption occurs, as well as additional energy dissipation due to the friction movement of the bases of the springs 11 and 12 along the surface of the disks 7 and 8 and an increase in the frictional force between the ring 13 and the yokes 9 and 10, due to an increase in their preload of the spring 11 and 12 .

figure 1

A a

Editor L.Gratillo

Phie.1

Compiled by E. Neselovsky

Tehred M. Khodanich Proofreader M. Maximiyeynets

Order 3076/39

Circulation 880 ... Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

A VIBRATION INSULATOR containing a coaxially mounted core made in the form of a sleeve with a central hole designed for mounting a fastener and disks attached to it, two axially movable wallpaper No. 4, made in the form of rings with shelves facing the disks and parallel to them, based on the sleeve, disc springs located between the disks and clips and interacting with them, the coil spring covering the sleeve and interacting with the ends of the shelf surfaces facing each other another ring with a longitudinal slot, based on the outer surface of the ring with the possibility of axial movement of the coil with flanges, between which the body of the vibration-insulated object is placed, and two pairs of conical springs facing large bases, of which one pair interacts with discs and flanges, and the other - with a coil and a body of a vibroinsulated object, characterized in that, in order to improve the quality of vibration isolation in the presence of transverse components of the load due to increased friction, the surface of each shelf facing the same surface of another shelf is made in the form of an annular groove, the cross section of which is a smooth curve symmetrical to the generatrix of the spring ring. SU, „, 1236223 ί 12362