RU1825903C - Device for dampening oscillations - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to protect objects of technology from vibration loads. The purpose of the invention is to increase reliability. The goal is achieved in that the device comprising a housing with permanent magnets installed in it, oriented by the same poles of the same name, is provided with a sleeve mounted in the housing coaxially with the possibility of moving along its axis with a platform for accommodating a vibroinsulated object, the permanent magnets are made ring , two magnets are fixed on the sleeve, on each magnet there are n pole tips in the form of cones, where n 3, the third magnet is fixed on the housing between the first and second magnets and and EET 2n pole pieces in the form of conical seats, arranged at both its ends. 3 ill. with

Description

The invention relates to mechanical engineering, namely to vibration isolators used to protect objects of technology from vibration loads.

The purpose of the invention is to increase the reliability of the device.

Figure 1 schematically shows the proposed device; figure 2 is a section aa in figure 1; Fig. 3 is a diagram of the decomposition of forces.

The vibration damping device comprises a cylindrical body 1 with a sleeve 2 mounted coaxially movably along the body axis of the housing 2. with a platform 3 for receiving a vibration-isolating object 4, for example, a vibration sensor. Ring magnets 5 and 6 with pole pieces 7 and 8 (in the amount of n 3) are mounted on the sleeve 2 with the possibility of movement along its generatrix. On the

an annular magnet 9 is rigidly fixed to the housing 1 with pole tips 10 and 11 mounted on both sides and made in the form of a cone in the amount of 2 g 3. The surfaces of the pole tips 10 and 11 face a gap 12 of the same poles to the surfaces of the pole pieces 7 and 8 ring magnets 5 and 6.

The device operates as follows.

An anti-vibration object 4, for example a vibration measurement sensor, is mounted on the platform 3.

When external vibrations of the vertical direction are exposed to the object 4, their damping occurs due to (Fig. H) that the surfaces of the pole tips 7 and 8 of the ring magnets 5 and 6, repelling, interact with the surfaces of the pole

00

y eat

AND

S

the tips 10 and 11 of the annular magnet 9, mounted on the inner side to the housing 1 of the shock absorber, since these surfaces are facing each other with the same poles (figure 1).

The angle of the pole pieces 7 and 8 of the ring magnets is selected from the condition that the resulting Fp component decomposes from the interaction of the magnets into two component forces:

horizontal Fr and Rsch and vertical FB and Fat. and damping vibrations in the vertical and horizontal planes (Fig. H).

When the object 4 is exposed to horizontal vibration loads, their damping occurs as a result of the interaction of the pole pieces 7 and 8 of the permanent magnets 5 and 6 with the pole pieces 10 and 11, the surfaces of which mesh with the air gap.

0

5

0

Claims (1)

Protection of the object 4 from rotation around its axis is ensured by the presence of n pole pieces (n Ј 3). which corresponds to the stability of the structure. SUMMARY OF THE INVENTION A device for damping oscillations, comprising a cylindrical housing with permanent magnets mounted therein, oriented at the same poles, characterized in that, in order to increase reliability, it is provided with a sleeve mounted in the housing coaxially with the possibility of movement along its axis with a platform for accommodating a vibroinsulated object, permanent magnets are made circular, two magnets are fixed on the sleeve, on each magnet there are p pole tips in the form of con whiskers, where n S 3, the third magnet is mounted on the housing between the first and second magnets and has 2n pole tips in the form of conical sockets located at both ends of it. FIG. f & 1825903 Fig 2