SU1465654A1 - Vibration isolator - Google Patents

Abstract

The invention relates to applied mechanics when using machines that have evolved 1f {x periodic effects, and is intended to isolate bases from vibrations created by various objects. The aim of the invention is to step up the level of damping of the Z6 in the regime of passing through resonance due to the constructive implementation of the elements of the vibration isolator. When passing through the resonance zone, the upper torus, the center of the spring 8, oscillates, the amplitude of which due to the lever 5 exceeds the amplitude of vibrations of the vibrating mass 2. The spring 8 converts the translational movement of the turns of the spring itself into rotational oscillations of the disk 10. A deformation occurs and the damping of the coating 13 and the damping of the ground occur. - cops 12, which leads to the scattering of the energy of vibration and to a decrease in the amplitudes of oscillations of the vibroactive mass 2. 2 Cp f-ly, 2 ill. (L with O) ate O) ate il / 2 Figure 1

Description

 1A

The invention relates to applied mechanics where machines are used, which cause periodic effects, and are intended to base the bases from the vibration generated by the fan, compressors, pumps, turbogenerators, as passive and active vibration isolation of machine tools and other process equipment.

The aim of the invention is to increase the level of damping in the mode of leakage through resonance due to the constructive implementation of the elementary vibration isolator.

FIG. 1 schematically shows a single vibration isolator, side view I in FIG. 2 is a section in FIG.

Vibration isolator contains parallel-mounted springs 1, located by me- nibroactive mass 2 to the vibroisolating base 3, detfer, having cylindrical box: casing 4 with slot, fixed on the vibroactive mass 2, mounted in the slot the casing 4 of the lever 5, with one end hinged by means of the stop 6 on the vibratory-active mass 2, and the other end of the lever 5 interacts with another I-seal 7 mounted on the vibration-insulated base 3 "belt i spring 8, fender 9, rigidly connected | at one end tape pru- | zhinoy and 8. articulated with the other end of the lever 5, the disk 10 suspended; on the string I to the vibroactive mass 2 and rigidly fixed at the other end of the ribbon spring 8, damping elements 12 mounted between the disk 9 and the casing 4, the damping coating 13 applied to the middle part of the outer surface of the belt spring.

The elevation angle of the axis of the spring belt 8 is chosen at least 10 °, and its average diameter is not less than the average diameter of the belt spring 8. In the absence of a static load on the vibration isolator, there is a gap between the short end of the lever 5 and the upper end of the stop 7, so that after applying a static load to the vibration isolator, the lever 5 and the stop 7 come into contact.

When passing through the resonant zone, the upper end of the ribbon spring 8 oscillates, the amplitude of which due to the lever 5 exceeds the oscillation amplitude of the vibrating mass 2. The spring 8 converts the translational movements of the coils of the spring itself into rotational oscillations of the disk 10, the deformation of the t3 and the damping elements 12 , which leads to the scattering of the energy of vibration and, consequently, to a decrease in the amplitudes of oscillations of the vibroactive mass 2 and a decrease in the vibration transmitted to the vibration-proof base 3. or.

The amplitude of the rotation angle of the disk of the torsional oscillation cavity is directly proportional to the square of the middle day, .. to the sine of the angle of elevation of the axis of the rod of the ribbon spring. The greater the rotation of the disk of the resonator, the greater the deformation of the damping elements 12, and, consequently, the greater the damping. The specified dimensions of the belt spring 8 and the angle of elevation of its axis provide the appropriate damping.

Claims (3)

1. A vibration isolator containing parallel-mounted springs located between the vibration-active mass and a vibration-isolating base, a damper and a torsional vibration resonator, characterized in that, in terms of increasing damping in a resonant mode, the damper is designed as a cylindrical casing with a slot rigidly fixed on the vibroactive mass and the lever installed in the slot of the casing, with one end hinged by means of an emphasis on the vibroactive mass, and with the other end the lever interacts with another stop, on the vibro-insulated base, the torsional resonator is installed in the damper and installed in the form of a ribbon spring, a lid rigidly connected to one end of the ribbon spring and pivotally with the other end of the lever, a disk suspended from a string to the vibroactive mass and hard attached to the other end of the belt spring, and the vibration isolator is equipped with a damping element installed between the outer surface of the disk and the inner surface of the housing. 2, Vibration isolator according to claim 1, about the fact that, on the middle part of the outer surface of the flax 1465654 Precise spring applied damping coating. 3. Vibration isolator according to claim 1, about t - which is characterized by the fact that the angle of elevation of the axis of the spring belt is not less than 10, and its average diameter is not less than the average diameter of the spring. dl Compiled by V. Zolotovsk. Editor Y. Sereda L. Serdyukova Proofreader M. Maksimishinets Order 929/38 Circulation 721 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk iab., 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FIG. Subscription