RU2403466C1 - Vibration isolating device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: vibration isolating device includes upper and lower support elements with hold-down rings, damping and elastic elements. Damping element is made of solid steel rope and attaches support elements with alternating braiding so that loops are formed and fixed in loop-retaining elements. Hold-down rings are located on outer sides of upper and lower support elements. Elastic element is made of four compression springs: one is central and three are radial peripheral. Upper and lower support elements on inner side are provided with four protrusions to fix springs. Radial peripheral protrusions are provided with central holes for attachment means of loop-retaining elements. Additional elastic-damping element is made in the form of cylinder with thin wire braiding and arranged inside springs between the appropriate protrusions. Buffer is made from composite material and arranged inside spring with its being attached to end plane of protrusion. Acoustic attenuators are installed between planes of support elements and springs.

EFFECT: increasing carrying capacity and increasing rigidity in transverse directions.

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Description

The invention relates to means of protection against vibration of objects of heavy engineering, as well as other areas of technology.

Known cable-spring vibration isolator (RF Patent No. 2185535, class F16F 7/14, 07/20/2002, bull. No. 20. Vibration isolating support of the internal combustion engine), The patent contains upper and lower supporting elements with pressure rings, quenching and elastic elements, moreover, the quenching element is made of a continuous steel rope having a torus shape, supporting disks with clamping rings located on the inner surface of each of the disks with corresponding radial grooves on the inner surfaces for girth and fixing by fixing means spirals from two opposite sides, additional elastic elements made in the form of at least three compression springs, which are installed uniformly around the circumference with the help of fixing and guiding devices between the clamping rings, i.e. in the annular part of the spirals or in the inner region of the torus as a whole.

Significant disadvantages of the known vibration isolator are insufficient compactness, limited central volume for installing an additional elastic element - springs, low bearing capacity and rigidity in the transverse directions.

The limited central internal volume is due to the presence of internal half-turns of spirals of a toroidal elastic element. This limits the possibility of using springs with a relatively large diameter, with high bearing capacity.

Also known vibration-isolating device [Patent for utility model of the Russian Federation No. 55061, class. F16F 7/14, 07/27/2006, bull. No. 21 (prototype). Anti-vibration device], containing the upper and lower supporting elements with clamping rings, quenching and elastic elements. The quenching element is made of a continuous steel rope and connects the supporting elements by alternately weaving with the formation of loops of the said steel rope and fixing the steel rope in the loop-holding elements, and the elastic element is made in the form of a compression spring. The clamping rings are located on the inner sides of the upper and lower support elements.

Significant disadvantages of the known vibration-isolating device are low bearing capacity and low rigidity in the transverse directions.

The technical results of this invention are to increase the bearing capacity and increase the stiffness in the transverse directions.

These distinctive features are achieved by the fact that:

1. The clamping rings are located on the outer sides of the upper and lower support elements.

2. The elastic element is made of at least four compression springs: one central and three radially peripheral.

3. The upper and lower supporting elements on the inside are made with at least four protrusions: one central - fixing means of the central spring and three radially peripheral - fixing means of radially peripherally located springs. Radially peripheral protrusions are made with holes for fastening means of loop-holding elements. The springs are made with soundproofing means (for example, of composite material, metal rubber, etc.) located between the inner planes of the support elements and the corresponding support planes of the springs.

4. An additional elastic damping element is made in the form of a cylinder by weaving from a thin wire with a density of 0.5 · 10 ³ to 3 · 10 ³ kg / m ² and is placed inside the springs between the corresponding protrusions.

5. Inside at least one spring, a buffer is placed to smoothly limit the course of the vibration isolator during excessively strong shocks and shocks. The buffer is attached (by welding, vulcanization) to the end plane of the protrusion.

6. The fastening means (bolt, screw) of the loop-holding elements are located in the centers of the peripheral protrusions.

The technical solution is illustrated by drawings, where in Fig.1 shows a vibration-isolating device assembly (longitudinal section), in Fig.2 - the same top view; figure 3 is a view of a vibration isolating device without additional elastic damping element and buffer.

The vibration isolating device (Figs. 1-3) contains the lower 1 and upper 2 support elements with clamping rings 3, 4 and fastening means 5, elastic (compression springs) 6, 7, main 8 and additional elastic damping 9, 10 elements, buffer 11, central 12 and peripheral 13, 14 protrusions on the inner side of the lower 1 and upper 2 support elements, means 15 for attaching the lower support element 1 to the foundation and 16 for fastening the upper support element 2 to the vibration-isolating object, soundproofing means (not shown in FIGS. 1-3 ) located between the inside two planes of the support elements 1, 2 and the respective reference planes of elastic members (compression springs) 6 and 7.

1-3, the elastic element of the vibration isolating device consists of seven cylindrical compression springs: one central 6 and six peripheral 7. The springs 6, 7 are fixed by the corresponding protrusions 12, 13, 14 on the inner planes of the lower 1 and upper 2 supporting elements.

The main elastic-damping element 8 is made of a continuous steel rope and connects the support elements 1, 2 by alternate weaving with the formation of loops A (Figs. 1-3) of the said elastic-damping element. An additional elastic-damping element 9, 10 is made in the form of a cylinder by weaving from a thin wire with a density of 05 · 10 ³ to 3 · 10 ³ kg / m ³ and is placed between the corresponding protrusions.

Buffer 11 (Fig. 1) for smoothly limiting the course of the vibration isolating device during excessively strong shocks — impacts is made of composite material, placed inside the spring and attached to the protrusion, for example, by vulcanization or welding.

An additional elastic damping element 9, 10 and a buffer 11 (Fig. 1) of a vibration-isolating device can be made in various versions:

1) with a buffer inside the central spring and an additional elastic-damping element inside the peripheral springs (figure 1);

2) with a buffer inside the peripheral springs 7 and an additional elastic-damping element inside the central spring 6;

3) with a buffer inside three springs peripherally located through 120 ° and an additional elastic-damping element in the remaining springs, etc.

Vibration isolating device can be performed without additional elastic-damping element 9, 10, if the disturbing force varies over a wide range.

A vibration-isolating device, for example, as supports for hammer machines for processing metal work by impacts of falling parts, the impact energy of which is transmitted to the foundation, works as follows.

When processing metal blanks with impacts, the speed of the headstock (working part) of conventional hammers is 3-6 m / s, and for high-speed hammers - up to 25 m / s.

A significant reduction in impact energy during the operation of the hammer is provided by elastic elements - springs 6, 7 due to their compression. Moreover, due to the deformation of the springs 6, 7, the shock transmitted to the foundation is significantly softened, and the hammer vibrations are quenched with the help of the main 8 and additional 9, 10 quenching elastic-damping elements (Fig. 1). The principle of operation of damping elasto-damping elements is reduced to the conversion of mechanical vibrational energy due to friction of the strands of the main 8 rope or weaving wires of an additional 9, 10 damping elasto-damping elements into thermal energy and its subsequent dissipation. As a result of these frictions, vibration damping is ensured.

When the hammer is operating at the permissible speeds of the woman, the deformation of the springs increases significantly, the smooth limitation of which is ensured by the buffer 11 (Fig. 1).

Given the above features of the vibration isolation device, the technical solution is useful.

An analysis of well-known technical solutions in this field and in related industries shows that such designs of vibration-isolating devices with the indicated features, advantageous and distinctive features are not available.

Claims (1)

A vibration isolating device comprising an upper and lower support elements with pressure rings, a quenching and elastic elements, the quenching element is made of a continuous steel rope and connects the upper and lower support elements by alternately weaving with the formation of loops of the steel rope and fixing the steel rope in the loop-holding elements, and the elastic element is made in the form of a compression spring, characterized in that the pressure rings are located on the outer sides of the upper and lower supporting elements, the elastic element The vent is made of at least four compression springs: one central and three radially peripheral, upper and lower supporting elements on the inside are made with at least four protrusions: one central, fixing the central spring, and three radially peripheral, fixing the radially peripheral springs, radially peripheral protrusions are made with central holes for fastening means of loop-holding elements, while the vibration-isolating device is made with additional elastic damping guide member is a cylinder of fine wire braided density of 0.5 × 10 ³ to 3 × 10 ³ kg / m ^3, placed inside the spring between the respective protrusions, and the buffer made of composite material and disposed within at least one spring with its fastening to the end plane of the protrusion, sound insulating means are installed between the planes of the support elements and the springs.

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