RU2576776C1 - Kochetov(s symmetric beaded mesh vibration isolator - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building. Vibration isolator comprises a base, elastic mesh elements, top and bottom pressure washers. Base is located in middle part of vibration isolator and is designed as a plate with fastening holes. Mesh elastic elements are rigidly connected to a foundation by means of backup rings. In upper and lower mesh elastic element in centre of dry friction damper is located axisymmetrically. Damper is made in form of a pressure washer rigidly connected with central ring enclosed by coaxial ring rigidly secured to base. Density of mesh structure of external layers of elastic mesh elements in 1.5 times greater than density of mesh structure of their internal layers. Elastic mesh elements are combined from a mesh frame filled with elastomer, for example polyurethane.

EFFECT: higher efficiency of vibration isolation in resonance mode, simplified design and assembly.

1 cl, 2 dwg

Description

The invention relates to mechanical engineering, instrumentation and can be used for vibration isolation of technological equipment, machine tools, devices.

The closest technical solution to the claimed object is a vibration isolator according to the patent of the Russian Federation No. 2288388, F16F 15/06, containing a base, an elastic mesh element and washers interacting with the bushings.

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

The technical result is an increase in the effectiveness of vibration isolation in resonance mode and simplification of design and installation.

This is achieved by the fact that in a symmetrical washer mesh vibration isolator containing a base, elastic mesh elements interacting with the base, the base is located in the middle of the vibration isolator and is made in the form of a plate with mounting holes, and the mesh elastic elements, the upper with the upper pressure plate and lower with the lower pressure washer, rigidly connected to the base by means of support rings, while in the upper mesh elastic element, in the center of the axisymmetrically located dry friction damper, made in the form erhney thrust washers rigidly connected to a centrally arranged ring covered coaxially arranged ring, is rigidly connected to the base.

In FIG. 1 shows a general view of the washer screen vibration isolator, in FIG. 2 - frontal section.

The symmetrical washer mesh vibration isolator contains a base 1, which is located in the middle part of the vibration isolator and is made in the form of a plate with mounting holes 2, and the elastic mesh elements, the upper 7 with the upper thrust washer 5 and the lower 8 with the lower thrust washer 10, are rigidly connected to the base 1 by means of support rings, respectively 6 and 9, while in the center of the upper mesh elastic element 7, a dry friction damper is arranged axisymmetrically, made in the form of an upper thrust washer 5, rigidly connected to a central a laid ring 4, covered by a coaxially located ring 3, which is rigidly connected to the base 1.

The density of the mesh structure of the elastic mesh element is in the optimal range of values: 1.2 g / cm ³ ... 2.0 g / cm ³ , and the wire material of the elastic mesh elements is steel grade EI-708, and its diameter is in the optimal range of 0 , 09 mm ... 0.15 mm.

The density of the mesh structure of the outer layers of the elastic mesh element is 1.5 times higher than the density of the mesh structure of the inner layers of the elastic mesh element.

The elastic mesh elements 7 and 8 can be made combined of a mesh frame, filled with an elastomer, for example polyurethane.

In the lower mesh elastic element, in the center there is an axisymmetrically located dry friction damper, made in the form of a lower pressure washer 10, rigidly connected to a centrally located ring 11, covered by a coaxially located ring 12, rigidly connected to the base 1.

The vibration isolator symmetrical washer mesh works as follows.

When vibrations of a vibroinsulated object (not shown in the drawing) located on the upper pressure plate 5, the elastic mesh elements 7 and 8 perceive both vertical and horizontal loads, thereby weakening the dynamic effect on the vibroisolated object, i.e. spatial vibration protection and shock protection are provided.

Claims (1)

The vibration isolator is a symmetrical washer mesh containing a base, elastic mesh elements interacting with the base, the base is located in the middle of the vibration isolator and is made in the form of a plate with mounting holes, and the elastic mesh elements are upper with a upper pressure washer and lower with a lower pressure washer are rigidly connected to the base through the support rings, while in the upper mesh elastic element in the center is located axisymmetrically a dry friction damper made in the form of an upper pressure washer, gesture connected to a centrally located ring, covered by a coaxially located ring, rigidly connected to the base, the density of the mesh structure of the elastic mesh element is in the optimal range of values: 1.2 g / cm ³ ÷ 2.0 g / cm ³ , and the material of the wire mesh elastic elements - steel grade EI-708, and its diameter is in the optimal range of 0.09 mm ÷ 0.15 mm, the density of the mesh structure of the outer layers of the elastic mesh element is 1.5 times higher than the density of the mesh structure of the inner layers of the elastic mesh about the element, the elastic mesh elements are made of combined mesh frame filled with an elastomer, for example polyurethane, characterized in that in the lower mesh elastic element in the center there is an axially symmetric dry friction damper made in the form of a lower pressure washer rigidly connected to a centrally located ring covered coaxially located ring, rigidly connected to the base.

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