Rubber-metallic damper

FIELD: machine building.

SUBSTANCE: damper consists of two flexible elements installed at angle to each other, fixed at base and support and kinematically interconnected with regulating element. The flexible elements are hinged by means of rotary axles and brackets. One brackets are fixed on plates of flexible elements, while others - on the base.

EFFECT: control over damper characteristics.

2 cl, 2 dwg

 

The invention relates to mechanical engineering, in particular to the field of mechanics of movement, and is intended for the elastic mounting of equipment on ships, as well as in other branches of engineering, where there are high requirements for effective vibration and shock protection equipment from external vibration and shock.

Known rubber shock absorbers, containing two installed at an angle to one another elastic element is fixed simultaneously on the basis and support (Wendouree. Rubber machine parts. The engineering. - 1977. - P.62, 32 b, g, e).

The disadvantage of shock absorbers is the inability to control preliminary design loads, and the lack of constructive internal insurance against failure of the equipment during the destruction of the rubber components.

Known rubber shock absorbers, containing two installed at an angle to each other elastic element is fixed simultaneously on the base and the support, which in turn kinematically connected between a power adjusting element (Wendouree. Rubber machine parts. The engineering. - 1977. - P.62, 32 a, d, 34).

A disadvantage of the known rubber grommets is that design is known rubber grommets has defined the s, unregulated, specifications, due to the compounding of rubber with a given modulus of elasticity.

A common disadvantage of the known rubber grommets is that they do not allow you to modify the technical characteristics of the elastic elements, for example the magnitude of the drawdown and the frequency of natural oscillations of the shock absorber in a wide range of values regardless of the compounding of rubber.

The technical result of the claimed invention is to provide a construction of rubber shock absorbers with adjustable, i.e. changeable characteristics.

The technical result is achieved in that the elastic elements hinged to the base by the axes of rotation and brackets are made on plates of elastic elements, and brackets mounted on the base. While on brackets fixed to the plates of elastic elements, and brackets secured on the base, the grooves, and on the basis of the mounting inclined surface parallel to the conical surface of a support.

The invention is illustrated by drawings:

figure 1 - rubber shock absorber in the initial position;

figure 2 - rubber shock absorber in position.

Rubber shock absorber contains two set of potoglou one another elastic element 1, fixed on the base 2 and the support 3, which in turn are kinematically connected to each other by a bolt 4, which carry out a preliminary load of the shock absorber. The elastic elements 1 pivotally mounted on the base 2 by the axes of rotation 5 and bracket 6, secured to the plates 7 of the elastic elements 1, and the brackets 8 secured on the base 2.

To change the kinematics of the shock absorber and, therefore, its technical characteristics on the brackets 6 and the brackets 8 are grooves 9 and 10, based on 2 mounting inclined surface 11 parallel to the conical surface 12 of the base 2.

Rubber shock absorber works as follows.

In the initial position, without load, the elastic elements 1 in cross section have the form of a rectangle (figure 1). In the process of loading the bearings last 3 moves down in the base 2, resulting in a conical surface 12 of the support 3 and the bracket 6, secured to the plates 7, the elastic elements 1 are rotated around the axes of rotation 5, mounted in brackets 8, which are fixed on the mounting inclined surfaces 11 of the base 2. In the elastic elements 1 are deformed as follows. In area "a" from the top edge of the elastic element 1 to the axis of rotation 5 of the elastic element 1 is subjected to compressive deformation and shear. In zone "b" the t axis of rotation 5 of the elastic element 1 to the lower edge of the elastic elements 1 are subjected to tensile strain and shear. Moreover, the rate of deformation of each zone "a" and "b" of the elastic element 1 is increased in direct proportion to the distance from the axis of rotation 5 (figure 2).

To change the technical characteristics of the rubber shock absorber enough to change the kinematics of the shock absorber. For example, to increase the drawdown of support 3 and to reduce the frequency of oscillations of the rubber shock absorber. For this purpose the grooves 9 move the bracket 6 relative to the plates 7 of the elastic elements 1 up to a certain amount. By the same value along the slots 10 move up the brackets 8 on the inclined surface 11 relative to the base 2, that is, change the size of the zone "a" to size "b".

This dependence is confirmed by the results presented in the table.

Area, mmDrawdown at a load of 80 kgf mmNatural frequency, Hz
"a""b"
30451,015,78
20556,36,29
15607,25,88

The results show that the proposed design of the rubber shock absorber allows you to adjust the technical characteristics of the changes in the kinematics of the shock absorber.

Thus, the proposed solution allows you to create a universal design rubber grommets with the specifications in a wide range of values regardless of the compounding of rubber.

1. Rubber shock absorber, containing two elastic element installed at an angle to one another and fixed on the base and the support, and is kinematically connected between a control element, characterized in that the elastic elements pivotally mounted with the axis of rotation and brackets fixed on the plates of elastic elements, as well as by means of brackets attached to the base.

2. Rubber shock absorber according to claim 1, characterized in that the brackets are fixed to the plates of elastic elements, and brackets secured on the base, the grooves at the base of the mounting inclined surface parallel to the conical surface of a support.



 

Same patents:

FIELD: machine building.

SUBSTANCE: vibration is damped by means of deformation of two rubber-metallic elements of cylinder or rectangular shape installed at angle one to another. During vibration damping a part of each of two rubber-metallic elements is subjected to stretching and shear deformation relative to rotation axis. Simultaneously, the second part of each out of two rubber-metallic elements is subjected to compression and shear deformation relative to the same axis of rotation. Percent of deformation of each of two parts of rubber-metallic elements grows in proportion to distance from rotation axis.

EFFECT: control over damper characteristics.

2 cl, 3 dwg

FIELD: machine building.

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FIELD: mechanics.

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FIELD: mechanics.

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2 cl, 2 dwg

FIELD: mechanical engineering.

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EFFECT: improved vibration insulation and simplified design.

1 cl, 1 dwg

FIELD: mechanical engineering.

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2 dwg

Plastic spring // 2173802
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FIELD: machine building.

SUBSTANCE: vibration is damped by means of deformation of two rubber-metallic elements of cylinder or rectangular shape installed at angle one to another. During vibration damping a part of each of two rubber-metallic elements is subjected to stretching and shear deformation relative to rotation axis. Simultaneously, the second part of each out of two rubber-metallic elements is subjected to compression and shear deformation relative to the same axis of rotation. Percent of deformation of each of two parts of rubber-metallic elements grows in proportion to distance from rotation axis.

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2 cl, 3 dwg

FIELD: machine building.

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EFFECT: control over damper characteristics.

2 cl, 3 dwg

FIELD: railway transport.

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3 cl, 6 dwg

FIELD: mechanical engineering.

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2 cl, 3 dwg

FIELD: machine building.

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2 cl, 2 dwg

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3 dwg

Damping unit // 2358166

FIELD: construction.

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6 dwg

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EFFECT: increased efficiency of vibration isolation.

1 dwg

FIELD: engineering industry.

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EFFECT: improving vibration insulation efficiency.

2 dwg

FIELD: engineering industry.

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EFFECT: improving vibration insulation efficiency.

1 dwg

FIELD: engineering industry.

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EFFECT: improving vibration insulation efficiency.

2 cl, 1 dwg

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