SU1362876A1 - Vibration isolator - Google Patents

Abstract

The invention relates to vibration protection means and can be used in mechanical engineering for vibration isolation of equipment and operator workplaces. The aim of the invention is to increase the efficiency of vibration isolation by increasing the working range of deformations of the vibration isolator. The movable part I of the housing is connected to the fixed part 2 of the case by the spring 3. On the fixed part 2 there is a magnet 4, facing the opposite pole to another magnet 5, fixed on the core. 6. When the load is transferred from the interaction of the magnets 4 and 5 to the movable part 1 through the yoke 6 and the rod 7, an increase in the area of reduced rigidity of the elastic characteristic of the vibration isolator is achieved, which provides an increase in the efficiency of vibration insulation. 2 Il. with Oi GhE (X) about:

Description

The invention relates to vibration protection means and can be used in mechanical engineering for vibration isolation of equipment and operator workplaces.

The purpose of the invention is to increase the efficiency of vibration isolation by increasing the working range of deformations of the vibration isolator.

FIG. 1 shows a diagram of the vibration isolator; in fig. 2 - graphs of the dependence of the forces acting on the protected object, on the deformation of the vibration isolator.

The vibration isolator includes a housing consisting of a moving part 1 connected to a vibration-insulating object (not shown) and a fixed part 2 connected by a spring 3. A fixed magnet 4 is fixed on the fixed part 2. The second magnet 5 is fixed on the yoke 6 The magnets 4 and 5 face each other with opposite poles. The yoke 6 is connected in series with the movable part 1 of the connecting rod 7 with the help of hinges and the hinge with the fixed part 2.

Vibration isolator works as follows.

As the distance x increases (Fig. 1), the rocker arm 6 with the magnet 5 is rotated by the connecting rod 7. The magnet 5 approaches the magnet 4. The connecting rod 7 deviates from the vertical position. The length of the spring 3 is increased.

The approach of magnet 5 to magnet 4 causes an increase in the force acting on part 1 from the interaction of magnets (graph a in Fig. 2), and an increase in the length of spring 3 leads to a decrease in its force acting on part 1 (graph b in fig. 2) . Their total characteristic, which is the elastic characteristic of the vibration isolator in a CyM, is represented by the graph in FIG. 2

The rotation of magnet 5 as it approaches magnet 4 slows down the growth of the attractive force of the magnets, which is explained by a decrease in the cross-sectional area of the magnetic field. Consequently,

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The growth of the force exerted on Part 1 from the interaction of the magnets is slowed down.

Some deviation of the rod 7 from the vertical position also leads to a slowdown in the growth of the force applied to part 1, since with this deviation the motion of part 1 relative to part 2 is not influenced by the force from the interaction of the magnets, but only its vertical component .

Thus, with an increase in the distance X, the rotation of the magnet 5 with the rocker 6 and some deviation of the connecting rod 7 from the vertical position result in a significant slowdown in the growth of force from the interaction of the magnets. This leads to a significant increase in the area of low rigidity on the elastic characteristic of the vibration isolator, and, consequently, to an increase in the working range of its deformations.

For comparison, in FIG. Figure 2 shows the characteristic of the force of the interaction of the magnets during the translational movement of the magnet 5 relative to the magnet 4 along the magnetic field lines.

When the distance is reduced, the vibration isolator operation proceeds in reverse order.

Claims (1)

Invention Formula A vibration insulator comprising a case consisting of moving and fixed parts connected by a spring, and two permanent magnets facing each other by opposite poles, one of which is fixed to the fixed part, and the second is connected to the moving part, that, in order to increase the vibration isolation efficiency by increasing the working range of the vibration isolator isolation, it is equipped with successively articulated joints between the rocker arm and connecting rod, connecting the second magnet with the moving part, and the Nirno connected with the fixed part. Editor I. Casard Order 5961/24 Compiled by M. Merry Tehred I. VeresKorrektor O. Kravtsova Circulation 804Subscribe VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4