Shock absorber

FIELD: machine building.

SUBSTANCE: shock absorber includes sleeve located in the centre, holder for attachment of shock absorber to base and elastomeric elastic elements consisting of two parts and placed in holder. External surface of each part of elastomeric elastic element is formed with cylindrical surface which is continued on one side to part of toroidal surface, and on the other side - to conical surface. Cylindrical cavities are uniformly located on conical surface of each part of elastomeric elastic element. A bore in the form of part of toroidal surface is made in the centre of each part of elastomeric elastic element on the side of conical surface. Holder consists of two parts in the form of shells having the shape of flattened straight circular cones, with central holes at each bottom of the shell, which is counted as top of flattened cone, and edges of shells are counted as bases of cones rigidly attached to each other along their end plane. Washer is located on sleeve in middle part of shock absorber, to which external toroidal surfaces of parts of elastomeric elastic element are connected on both sides. One end of sleeve is taken out through a hole at the bottom of the first shell to be attached to equipment. The other end of sleeve is provided with thickened pivot and faces the hole of the second shell.

EFFECT: improving reliability of shock absorber and vibration insulation efficiency.

2 cl, 6 dwg

 

The invention relates to the field of engineering and is intended for protection against vibration and shocks of various equipment and facilities.

The level of technology

Known vibration absorber containing elastomer elastic element, in the middle part of which is placed the cage in the Central hole of the insulator is installed sleeve with clamping washers, see JP 2008255999 (A), F16F 1/36, 15/08.

The specified vibration absorber has the following disadvantages: with this design of insulator cannot vibration protection products with low weight and low frequency response, since the elastic vibrations in the vibration damper is made only at the expense of compression and buckling of the elastic element, and not used him to Flexural deformation.

Known as "shock Absorber", patent of Russian Federation №2050483, including elastomeric elastic element is made of two parts, the outer surface of each of which is formed a cylindrical surface passing from one side to the part of the torus sleeve surface, and on the other side in a conical shape with the apex of the cone directed opposite to the part of the torus sleeve surface. On the conical surface of each part of the elastomer of the elastic element is made of a cylindrical cavity, evenly spaced on the surface of a cone, the axis of which is located radially to the OS the shock absorber. In the center of each part of the elastomer of the elastic element from the side of the conical surface of the bore as part of the torus sleeve surface, is the sleeve. The shock absorber includes a clip for attaching the shock absorber to the base, and a housing provided with ribs placed elastomer elastic elements.

However, at higher levels of vibration and shock stress elastomeric elastic elements of the shock absorber out of the cage and sit on the edges of the flanges of the clip, which reduces reliability. Shock ceases to function.

The technical problem on which the invention is directed, is to increase the reliability of operation of the shock absorber and the effectiveness of vibration isolation due to the possibility of reducing the resonant frequency of the absorber, including for equipment with small weight load.

The invention

To achieve a technical result in the absorber containing elastomer of the elastic element is made of two parts, with the outer surface of each part of the elastomer of the elastic element formed by a cylindrical surface, passing from one side to the part of the torus sleeve surface, and on the other side in a conical shape, with the apex of the cone directed opposite to the part of the torus sleeve with a cylindrical EAP is dynamic, evenly spaced on the conical surface of each part of the elastomer of the elastic element, the axes of which are arranged radially to the axis of the shock absorber, with the bore as part of the torus sleeve surface, is made in the center of each part of the elastomer of the elastic element from the side of the conical surface located in the sleeve, the clip for attaching the shock absorber to the base and placed in the holder elastomeric elastic elements, the cage is made of two parts in the form of glasses in the form of a truncated direct circular cones with Central holes in each bottom of the glass, taken as the top of the truncated cone, and the rims of the glasses for the base of the cones, rigidly connected with each other on their face plane. On the Bush in the middle of the absorber is the washer, with which both sides of its external trowymi surfaces of the connected parts of the elastomer of the elastic element, the conical surface of which facing the bottom of the glasses. One end of the sleeve removed through a hole in the bottom of the first Cup to attach to the equipment, and the other end of the sleeves are made with thickened fifth and converted into the hole of the second Cup.

When this elastic elements installed between the washer and the bottom of the cups without glue, due to the preload.

In addition, the hard edge of the washer on the plug and the hole in the bottom of the article is kanov clip obezyany, while the clip is made of metal or plastic, such as fiberglass. The latter will greatly simplify its manufacture and increase consumer characteristics: reduce the weight and increase the temperature of the absorber. For mounting the shock absorber on the basis of a ferrule provided with a flange in the middle or lower parts of the shock absorber.

Thus, the essential distinguishing features of the invention is that it enables the operation of the shock absorber at higher levels of vibration and shock stress by eliminating the slipping elastomer of the elastic shock absorber element from the set, which increases the reliability and increases the effectiveness of vibration isolation equipment due to the possibility of reducing the frequency of resonant oscillation.

List of figures in the drawings:

figure 1 represents a longitudinal section of the absorber-axis in accordance with the invention, installation option, a mounting flange in the middle of the shock absorber;

figure 2 is a top view of the shock absorber of figure 1;

figure 3 is a longitudinal section of the absorber-axis, is made in the variant with the installation of a mounting flange at the bottom of the absorber;

4 shows a top view of the shock absorber in Fig 3;

figure 5 shows a longitudinal section of the elastomer of the elastic element along the axis, is made to have the setting on the shock absorbers, presented on figures 1 and 3;

figure 6 is a top view of the elastomeric elastic element.

The implementation of the claimed inventions

Damper, see figure 1, 2, includes a housing consisting of two parts, made in the form of cups 1 and 2 in the form of a truncated direct circular cones with a Central hole 12 in the bottom of cups and are rigidly connected with each other by the edges of the glasses on the face planes. On the sleeve 7 in the middle part of the shock absorber is a washer 4, on the upper and lower surfaces which are symmetrically placed their external trowymi surfaces and pressed against him elastomer of the elastic element 3, the conical surface 15 is drawn into the bottom of the cups 1 and 2.

The glasses 1 and 2 attached to the conical shape to increase in places deformation vypuchivalas surfaces of the elastomer of the elastic elements 3 and more space to move the washer 4 in the horizontal direction.

For mounting the shock absorber to the base to a holder consisting of two glasses, formed by the flanges 5 and 6, see figure 1, 2, 3 and 4.

One end of the sleeve 7 in the upper part removed through the opening 12 in the bottom of the upper Cup to attach to the equipment, and the other end of the sleeve 7 is made with a thicker fifth 8 and converted into the hole of the second Cup 2.

The sleeve 7 with the washer 4, the fifth 8, the screw hole 9 and the flange with the flats on the 10 made of one part. Two parts of elastomer of the elastic element 3 is placed inside the parts of the cage. The heel 8 of the sleeve 7 prevents jumping of the elastic element 3 with the edges of the sleeve 7 when it is moved on the sleeve. The end of the sleeve 7 with the screw hole 9 and the flange with flats under 10 wrench goes through the hole 12 in the bottom of the Cup 1 and serves for mounting equipment on the shock absorber. The hole in the bottom of another Cup 2 excludes the impact of abutment 8 on the bottom of the Cup 2 when moving the sleeve 7 down.

Rubber ring 11 at the edges of the washer 4 and the holes in the cups 1 and 2 reduce Namin surfaces 19 of elastomeric elastic elements 3 hard edges of the washer 4 and the holes in the glasses.

Both parts of the clip may be made depending on the needs of both metal and plastic, such as fiberglass. The latter will greatly simplify its manufacture and increase consumer characteristics: reduce the weight and increase the temperature of the absorber.

Each part of the elastomer of the elastic element has a Central hole 14, the end of the conical surface 15 on which is formed a cylindrical cavity 16, the lateral cylindrical surface 18, which is turning into a toroidal form 19, at end conical surface toroidal bore 17, see figure 5.

In the center of each side of the elastomer is wow elastic element on the end of the conical surface 15 evenly spaced cylindrical cavities 16, the axes of which are arranged radially to the axis of the shock absorber, see Fig.6.

Part of the elastomer of the elastic element 3 of their holes 14 are placed on the cylindrical part of the sleeve 7 with a slight interference fit, see figure 1, 3 and 5. This torus surface 19 of the elastic elements 3 are pressed against the washer 4 and the conical surface 15 abuts the bottom of the cups 1 and 2. Elastic elements 3 are mounted between the washer 4 and the bottom of the cups 1 and 2 without glue, due to the preload.

Figure 3 and 4 shows the inventive shock absorber, but with the location of the mounting flange 6 at the bottom of the absorber in the plane of the bottom of the conical Cup 2.

The shock absorber also includes two parts of elastomer of the elastic element 3, washer 4, the sleeve 7 made on fifth 8, the flange 10, the thread 9, the clip of the two parts 1 and 2, rigidly connected with each other in the middle part of the shock absorber, for example, the bracket 13.

Part of the elastomer of the elastic element 3 are in the closed space between the surfaces of the glasses 1 and 2, the washer 4, which prevents the loss of this space and preserves the effect of damping due to the constant contact of elastic elements on the surface of the cage at elevated levels vibration and shock impacts.

Thus, the essential distinguishing features of the invention is that it ensures the functioning of amortis the Torah at higher levels of vibration and shock stress due to the exclusion of saskachewan parts of elastomer of the elastic shock absorber element, increasing reliability and improving vibration isolation equipment due to the possibility of reducing the resonant frequency of the absorber.

The operation of the shock absorber

Vibration and shock loads acting on the ferrule 1 and 2, extinguished in the elastic elements 3 in the above-resonance frequency range. When this elastic elements work as compression, and bending, which allows for small masses of elastic elements to provide large deformation and improve the effectiveness of vibration isolation by performing depreciation with resonance at low frequencies, including for vibration protection products with a small mass.

Resonant oscillations in the shock absorber is reduced due to internal losses in the elastomer 3, the friction of the elastic elements on the sleeve 7 and the inner surface of the cups 1 and 2 and the washer 4. The calculated geometrical dimensions of the elastic elements 3 provide a resonant frequency of the absorber in a wide frequency range including low frequency at a given weight load of equipment that improves the efficiency of the vibration damper.

1. The absorber containing elastomer of the elastic element is made of two parts, with the outer surface of each part of the elastomer of the elastic element formed by a cylindrical surface, passing from one side to the part of the torus sleeve surface and, and on the other side in a conical shape, with the apex of the cone directed opposite to the part of the torus sleeve surface, cylindrical depressions, evenly spaced on the conical surface of each part of the elastomer of the elastic element, the axes of which are arranged radially to the axis of the shock absorber, with the bore as part of the torus sleeve surface, is made in the center of each part of the elastomer of the elastic element from the side of the conical surface, located in the center of the sleeve, the clip for attaching the shock absorber to the base and placed in the holder elastomeric elastic elements, wherein the ferrule is made of two parts in the form of glasses in the form of a truncated direct circular cones, with the Central holes in each bottom of the glass, taken as the top of the truncated cone, and the rims of the glasses for the base of the cones, rigidly connected with each other at their end plane on the Bush in the middle of the absorber is the washer, with which both sides of its external trowymi surfaces of the connected parts of the elastomer of the elastic element, the conical surface of which facing the bottom of the glasses, one end of the sleeve removed through a hole in the bottom of the first Cup to attach to the equipment, and the other end of the sleeves are made with thickened fifth and converted into the hole of the second Cup, when atappa elements are installed between the washer and the bottom of the cups without glue, due to the preload.

2. The shock absorber according to claim 1, characterized in that the solid edge of the washer on the plug and the hole in the bottom of the glasses clip obezyany, and the ferrule is made of metal or plastic, such as fiberglass.



 

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