SU1740821A1 - Vibration isolating support - Google Patents

Abstract

Use: mechanical engineering and vibration technology. SUMMARY OF THE INVENTION: The support comprises bases and an U-shaped elastic element mounted between them, the ends of which are offset towards each other. The arcuate portion of the elastic element is connected by a hinge with a base. An additional hinge is installed on one of the bases. The axial thrust restraint is rigidly fixed on another base. The plates are fixed on the support and clamp extra / hinge. The support can be provided with additional plates bent in an arc. The U-shaped elastic element can be formed by two coaxially mounted plates with a gap between the arcuate portions, 2 ° C. f-ly, 4 ill.

Description

The invention relates to vibration protection technology and can be used in general engineering to increase the efficiency of vibration insulation of machines and devices.

A vibroisolating support is known, comprising an upper and a lower base and a resiliently curved member hinged between them.

A disadvantage of the known support is its low damping efficiency.

The closest in technical essence and the achieved result to the invention is a vibration-isolating support comprising bases and interposed between them and an elastic element bent in the plane hinged to one of them.

The disadvantage of this support is its low damping efficiency.

The purpose of the invention is to increase the efficiency of damping vibrations.

This goal is achieved by the fact that the elastic element is curved U-shaped. the arcuate section is connected with the base, and the ends are displaced towards each other and rigidly connected to another base, and the support is provided with an additional hinge mounted on one of the bases with an axial movement stop fixed on the other base and plates fixed to the support and clamping an additional hinge.

The anti-vibration support is provided with additional plates bent in an arc placed between the hinge and the arcuate section, respectively, and between the latter and the base.

The U-shaped elastic element is formed by two coaxially mounted “myy &

“Guy

us with a gap between the arcuate portions.

Figure 1 shows an anti-vibration mount; in fig. 2 is a section A-A in FIG. one; in fig. 3 - support with additional curved plates; in fig. 4 - support with coaxially mounted plates.

The anti-vibration support (Fig. 1, 2) contains bases 1, 2, an elastic element 3, made in the form of a U-shaped plate, the arcuate portion of which is connected by a hinge 4 with a base 2 and placed in its bore 5. The ends of the elastic element are displaced towards each other and rigidly connected to the base 1. On the base 1 there is a stop 6 for axial movement, on which plates 7 and 8 are fixed, which clamp with their ends an additional hinge 9 mounted on the base 2.

The anti-vibration mount (Fig. 3) contains additional plates 10 and 11 bent in an arc, which are placed respectively between the hinge 4 and the arcuate portion of the elastic element 3 and between and after. them and the basis of 2.

The anti-vibration mount (FIG. 4) contains coaxially arranged two U-shaped curved plates 12 installed with a gap between the arcuate portions and rigidly fastened at their ends between themselves and with the base 1.

The anti-vibration mount works as follows & time.

Under the action of an axial load on an object (not shown in the drawing), which is mounted on the base 1, it approaches the base 2 first, primarily due to the fit of the portion of the elastic element 3 to the surface of the bore 5, and then due to the longitudinal bending of its ends. In this case, the deflection of p increases. The rate of this increase sharply increases with a longitudinal load of the side portions close to the Euler critical force. In this case, the rigidity of the device tends to zero. The movement is limited by the choice of the gap A i between the stop 6 and the hinge 9, as well as the gaps D f between the sides of the elastic element 3 and the additional plates 7 and 8.

In the construction (FIG. 3), in the initial section, depending on the direction of the axial load, with relative displacement of the bases, deformation occurs first

the arcuate portion of the elastic element 3. and then the plates bent along the arc 10, 11, which makes it possible to obtain new sections of the elastic characteristic.

In the design (figure 4) when approaching

The bases 1 and 2 under the action of the axial load first work the outer plate 12 according to the type of construction (figure 1). In this case, the inner plate can move within the gap without deformations. After choosing the gap between the plates, the inner plate also enters the work. As a result, the elastic characteristic contains alternating sections with increasing and decreasing values of the stiffness coefficient.

The elastic characteristics implemented by the device provide an increase in the efficiency of damping vibrations of an object under vibration and shock loads.

Claims (3)

1. Vibro-insulating support containing a base and installed between them and a resiliently bent inline element connected to one of them, which means that, in order to increase the effectiveness of damping, the elastic element is bent in an arched and arched section connected by a hinge with the base, and the ends are biased each other and rigidly connected to another base, and the support is provided with an additional hinge mounted on one of the bases with an axial thrust supported rigidly mounted on another base, and plates fixed to the stop, clamping the additional hinge. 2. The support according to claim 1, characterized in that it is provided with additional arc-curved g Plates placed respectively between the hinge and the arcuate portion of the elastic element and between the latter and the base. 3. A support according to claim 1, characterized in that the U-shaped elastic element is formed by coaxially mounted two plates with a gap between the arcuate portions. 3lsJ about A-A figure 1 shg J